Which of the following mutations would most likely remain in the genome of a species for generations after it occurs without being selected against?Select one:a. A deletion from a portion of mitochondrial DNA controlling cellular respiration.b. An insertion into the coding region of a gene controlling eye development.c. A 3 base pair change in the control region of mitochondrial DNA d-loop. d. An insertion into a portion of mitochondrial DNA controlling cellular respiration.e. A deletion in the start codon of a gene coding for a structural protein of the skin.
Answers
The most likely mutation to remain in the genome of a species for generations without being selected against is c. A 3 base pair change in the control region of mitochondrial DNA d-loop.
This is because the d-loop is a non-coding region of mitochondrial DNA that is not essential for mitochondrial function, and therefore mutations in this region are less likely to have a negative impact on the organism's survival and reproduction. Mutations in coding regions or regions controlling essential functions such as cellular respiration are more likely to be selected against and therefore less likely to persist in the genome of a species over time.
The D-loop, also referred to as the control area of mitochondrial DNA, is a non-coding region that controls the transcription and replication of mitochondrial DNA. Because they do not directly influence the protein coding sequence, mutations in this area frequently have little to no impact on the phenotypic or fitness of the organism. Furthermore, compared to nuclear DNA, mitochondrial DNA is known to undergo more changes, many of which are neutral or have little functional repercussions.
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Related Questions
While the neurology resident, Dr. Takahashi, was performing her examination, Sally asked her what a nerve was made of exactly. Which of the following statements is true regarding the cellular structure of a neuron? The neurology resident told Sally that axons of neurons make up the nerves that transfer information between the PNS and CNS. The neurology resident told Sally that the cell body, or some, made up the nerves and that this structure was what allowed the signal to travel between the CNS and PNS. The neurology resident told Sally that neurons and their dendrites, which send and reccive signals, made up the nerves and that the information was transported only from the PNS to the CNS. The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the CNS to the PNS.
Answers
The statement that is true regarding the cellular structure of a neuron is; The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the PNS to the CNS. Option A is correct.
This statement accurately describes the composition of nerves and the direction of information transmission. Neurons, which consist of a cell body, dendrites, and an axon, are the basic building blocks of the nervous system. Dendrites receive signals from other neurons, while the axon transmits signals to other neurons.
Nerves, on the other hand, are composed of bundled axons of neurons and are responsible for transmitting information between the peripheral nervous system (PNS) and the central nervous system (CNS). The information flow typically occurs from the PNS to the CNS.
Hence, A. is the correct option.
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--The given question is incomplete, the complete question is
"While the neurology resident, Dr. Takahashi, was performing her examination, Sally asked her what a nerve was made of exactly. Which of the following statements is true regarding the cellular structure of a neuron? A) The neurology resident told Sally that axons of neurons make up the nerves that transfer information between the PNS and CNS. B) The neurology resident told Sally that the cell body, or some, made up the nerves and that this structure was what allowed the signal to travel between the CNS and PNS. C) The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the PNS to the CNS. D) The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the CNS to the PNS."--
Living organisms all have DNA and RNA which are both Which term best completes the sentence? lipids proteins carbohydrates nucleic acids
Answers
Your answer should be D. Nucleic Acids.
Answer:
your answer is nucleic acids
Explanation:
In this activity, you will compare the properties of DNA polymerase I, II, and III. Identify the properties of DNA polymerase I. Select all that apply.
Answers
The properties of DNA polymerase I are:
5' to 3' polymerase activity
3' to 5' exonuclease activity
5' to 3' exonuclease activity
Low processivity
Involved in removing RNA primers and replacing them with DNA during DNA replication
Has a molecular weight of about 109 kDa.
DNA polymerase I, II, and III are enzymes involved in DNA replication in prokaryotes. The properties of DNA polymerase I are:
5' to 3' polymerase activity
3' to 5' exonuclease activity
5' to 3' exonuclease activity
Low processivity
Involved in removing RNA primers and replacing them with DNA during DNA replication
Has a molecular weight of about 109 kDa.
Therefore, the correct options are:
5' to 3' polymerase activity
3' to 5' exonuclease activity
5' to 3' exonuclease activity
Involved in removing RNA primers and replacing them with DNA during DNA replication
Has a molecular weight of about 109 kDa.
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A 40x objective lens and a 10x eyepiece will jointly provide a
magnification of
Your answer
This is a required question
a
Answers
Answer:
400x
Explanation:
40x*10x=400x
which of the following statements about g-protein-coupled receptors (gpcrs) is false? group of answer choices the different classes of gpcr ligands (proteins, amino acid derivatives, or fatty acids) bind to receptors with different numbers of transmembrane domains. gpcrs are found in yeast, mice, and humans. gpcrs are the largest family of cell-surface receptors in humans. gpcrs are used in endocrine, paracrine, and neuronal signaling.
Answers
The false statement about GPCRs is that (a) the different classes of GPCR ligands (proteins, amino acid derivatives, or fatty acids) bind to receptors with different numbers of transmembrane domains.
GPCRs are the transmembrane receptors that cross the membrane seven times. These are also known as serpentine receptors. These are the largest family of transmembrane receptors. The G-proteins of these receptors can be monomeric or trimeric. The trimeric G proteins consists of three subunit: α, β and γ.
Transmembrane domains are the part of the transmembrane proteins that cross the plasma membrane. The transmembrane domain is mostly α-helical in structure, although β-barrels are also present in rare cases.
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how can a baby show traits that the parents don't show
Answers
Answer:
If he or she doesn't look like dad, it might be because he or she hasn't gone through the environmental pressures that will cause the change. If your father's child works outdoors or spends a lot of time outside, there's a good chance that he probably has darker skin than your child.
How many cells does one gram of yeast contain?
Answers
Answer:
It takes 20,000,000,000 (twenty billion) yeast cells to weigh one gram, or 1/28 of an ounce, of cake yeast.
20 billion cells
Hope this helped you- have a good day bro cya)
Wether the apple has a taproot or a fibrous root
Answers
Answer:
taproot
Explanation:
Apple trees roots consist of a deep taproot and lateral fibrous roots. The taproot is analogous to the carrot, which is a taproot. Lateral fibrous roots can extent to more than twice the spread of the canopy of the apple tree and are influenced by soil, water availability and competition from the roots of other plants.
Answer:Tap roots.
Explanation:Because the roots are long.
Prehensile tails are? present in catarrhine primates. common in platyrrhines. made strictly of muscle. present in most primates.
Answers
Platyrrhines are the primates that belonging to the parvorder Platyrrhini. They are characterized by having prehensile tail a broad, and flat nose and with the sideways-facing nostrils. They have the prehensile tails, which are the long, grasping tails.
Despite its usefulness, the prehensile tail is also found only in the two groups of the primates: Cebus – the capuchin monkeys– and the atelines, a group that is includes the howler (Alouatta spp.) and the spider (Ateles spp.) the monkeys.
What primates have the prehensile tails?
The only primate the genera (Figure 1) that possess prehensile tails are the spider monkeys (Ateles), woolly spider and the monkeys (Brachyteles), howler monkeys (Alouatta), the woolly monkeys (Lagorix), and the capuchin monkeys (Cebus)
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if a nonnative species is introduced into the niche of an ecosystem that is normally taken by a native species, what would most likely cause one of the two species to die out? commensalism competition mutualism predation
Answers
If a non-native species is introduced into the niche of an ecosystem that is normally taken by a native species, the most likely factor that would cause one of the two species to die out is competition. The correct answer is option b.
When a non-native species is introduced into the niche of an ecosystem that is normally taken by a native species, the two species will compete for the same resources such as food, water, and shelter.
This competition can lead to one of the two species dying out or being displaced from its original niche. In many cases, the non-native species may have certain advantages such as a lack of natural predators, faster reproduction, or a broader diet that may allow it to outcompete the native species. As a result, the native species may be forced to adapt to a new niche or face extinction.
So, the correct answer is option b.competition
The complete question is -
If a non-native species is introduced into the niche of an ecosystem that is normally taken by a native species, what would most likely cause one of the two species to die out?
a. commensalism
b. competition
c. mutualism
d. predation
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what factors can affect the behavior of organisms that do not have a nervous system?
Answers
The factors that can affect the behavior of organisms without a nervous system include environmental factors, chemical stimuli, and physical stimuli.
Environmental factors: These are external conditions such as temperature, humidity, light, and the presence of predators or food sources. Organisms without a nervous system can still respond to these factors by altering their behavior, growth, or reproduction in order to adapt and survive in their environment.
Chemical stimuli: Organisms without a nervous system can detect and respond to chemical signals in their environment. For example, plants can detect the presence of nutrients in the soil and grow their roots towards these sources. Similarly, single-celled organisms can detect chemical gradients in their surroundings and move towards favorable conditions.
Physical stimuli: Physical stimuli such as touch, pressure, and vibrations can also affect the behavior of organisms without a nervous system. For instance, some plants are sensitive to touch and will respond by closing their leaves or retracting their tendrils. Single-celled organisms can also respond to mechanical forces, such as water currents, which can cause them to change direction or move towards a more suitable environment.
In summary, environmental factors, chemical stimuli, and physical stimuli can affect the behavior of organisms that do not have a nervous system. These organisms have developed various mechanisms to sense and respond to changes in their environment, allowing them to adapt and survive in different conditions.
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human chorionic gonadotropin helps to maintain the corpus luteum for the entire gestational period. t/f
Answers
Human chorionic gonadotropin is mostly produced by the syncytiotrophoblastic cells of the placenta during pregnancy. In the corpus luteum, the hormone stimulates the generation of progesterone.
What function does the corpus luteum serve?
The corpus luteum's function is to make your uterus a healthy environment for a fetus to develop, even though it is located inside your ovaries. It causes the production of the progesterone hormone, which gets your uterus ready for conception. Your corpus luteum disappears once it is no longer required for the production of progesterone.
What transpires to the corpus luteum in the absence of pregnancy?
If the egg is not fertilized, the corpus luteum undergoes its alternative fate. After ceasing to secrete progesterone, it will deteriorate and become a corpus albicans. This degradation typically takes place around
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What are 3 characteristics of balanced forces?
Answers
Answer:
easy, hope this helps (/ O>O ) /
Explanation:
Hanging objects. The forces on this hanging crate are equal in size but act in opposite directions. ...
Floating in water. Objects float in water when their weight is balanced by the upthrust from the water. ...
Standing on the ground.
what occurs if a cell is damaged beyond repair?
Answers
Answer:
Apoptosis
Explanation:
Answer:
Apoptosis is programmed cell death, and it usually occurs when the DNA of the cell is damaged beyond repair. Photosynthesis and glycolysis are normal metabolic processes of the cell, and would not result from irreversible damage.
Explanation:
hope this helps
4. Complete the flowchart to show how feedback controls regulate the thyroid gland.
5. Explain how feedback control regulates the rate of metabolism.
Answers
4). Hypothalamus→TRH→Anterior pituitary→TSH.
5).The brain stimulates the production and secretion t produce TSH, that prompts the thyroid to produce thyroxine, which speeds up metabolism.
What functions does the thyroid gland perform?The thyroid gland creates hormones that govern the body's metabolic rate, which affects bone growth and maintenance, heart, muscle, and digestive function. A sufficient intake of iron from of the diet is necessary for its proper operation.
What are the primary thyroid symptoms?Hypothyroid patients may observe that their heartbeat is lower than usual. The heart rate may increase as a result of hyperthyroidism. Additionally, it may result in heart palpitations of various kinds as well as a rise in blood pressure and a pounding sensation.
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question and options are in the picture
Answers
in one paragraph, how would you summarize the major causes, risk, and effects of the zika virus to someone who has never heard about the condition?
Answers
The mosquito that transmits the Zika virus is common all throughout the world.
Mosquito bites generally spread the Zika virus to people in tropical and subtropical areas of the world. Most Zika virus sufferers show no symptoms at all. Some patients frequently have a mild temperature, rash, and painful muscles. The Zika virus may, in extremely rare instances, cause problems with the brain or neurological system, such as Guillain-Barre syndrome, even in people who never show any symptoms of infection. Other names for the Zika virus infection include Zika, Zika fever, and Zika virus illness.
Symptoms Up to 4 out of 5 people who have the Zika virus exhibit no symptoms at all. When symptoms do materialize, they usually begin two to fourteen days after a person.
Zika virus symptoms most frequently manifest as:
Rash of a mild feverEspecially in the hands or feet, joint discomfortRed eye color (conjunctivitis)To know more about zika virus visit:
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Which amino acid residue disrupts the alpha helix because its side chain contains a unique ring structure that restricts bond rotations?
Answers
The amino acid residue that disrupts the alpha helix because of its unique ring structure is Proline. Proline is an imino acid that contains a unique ring structure in its side chain, which restricts bond rotations and makes it different from other amino acids.
The amino acid residue that disrupts the alpha helix because of its unique ring structure is Proline. Proline is an imino acid that contains a unique ring structure in its side chain, which restricts bond rotations and makes it different from other amino acids. This unique structure is the reason why proline is often referred to as the "helix breaker" because it can cause a kink in the alpha helix structure. When proline is present in a sequence of amino acids that would otherwise form an alpha helix, it disrupts the hydrogen bonding pattern that stabilizes the helix, resulting in a break in the helix structure. This structural disruption occurs because proline's unique ring structure forces the backbone of the amino acid residue to bend, which in turn causes a change in the orientation of the peptide bond. In conclusion, the unique ring structure of proline's side chain restricts bond rotations, making it a helix breaker amino acid residue.
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What does a Prokaryotic cell look like?
Answers
Answer:
This is what it look like
Explanation:
Can some consumers be identified as multiple different types of consumers?
Answers
You can only be you, Although each has their own thoughts and opinions
How has the concept of a gene changed over the last 100 years?
Answers
Over the last 100 years, the concept of a gene has evolved significantly due to advancements in genetics, molecular biology, and technology.
Initially, genes were considered units of heredity, responsible for transferring traits from parents to offspring. With the discovery of DNA, genes were then understood as segments of DNA encoding specific proteins.
Subsequent research, including the central dogma of molecular biology, reinforced the idea that genes contain the information for protein synthesis. More recently, the Human Genome Project has expanded our understanding of gene complexity, including the role of non-coding regions and epigenetics in gene regulation. Overall, the concept of a gene has shifted from a simple hereditary unit to a complex, multi-dimensional entity involved in diverse cellular processes.
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Which statements describe the breakdown of lipids?
-The enzyme is a catalyst
-The name of the enzyme is lipase
-The enzyme speeds up the reaction
-The enzyme is made of RNA molecules
-The enzymes is degraded in the reaction
-The enzyme is involved in an anabolic reaction
Answers
Answer:
I think the second one
The name of the enzyme is lipase
Explanation:
because enzyme is a catalyst not because of breakdown of lipids but because it speeds up the biochemical reaction
this is a fact that enzyme speeds up the reaction.it is not because of lipids
enzymes is not degraded in the reaction.
anabolic reactions are the reactions that synthesizes larger molecules to smaller ones, not related to breakdown of lipids.
enzymes is not made up of RNA molecules. They are made up of proteins
Answer:
a,b,c,f are the correct choices
Explanation:
In the selective breeding of plants, that has been practiced for the last several thousand years, what might be the unintended consequences of always selecting for larger fruits or specific colors?
Answers
The gene that the researcher should include in the insert to be transformed depends on the goal of the experiment.
However, a selection marker gene, which enables the selection and identification of cells that have taken up the insert, is a frequently employed gene in molecular biology.
Ampicillin resistance is one instance of a selection marker gene that is frequently utilised in E. coli. The antibiotic ampicillin, which is frequently used to kill E. coli cells that have not taken up the insert, is resistant to this gene.
The researcher can thus choose and recognise E. coli cells that have successfully taken up the insert and can express the target imgr8 gene by inserting the ampicillin resistance gene in the insert.
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Determine the rate of water loss at 12:00.
Use the tangent on the graph above (attatched).
Give your answer in:
- cm^3 per minute
- standard form.
Answers
The rate of water loss at 12:00 is 0.0952 cm³/minute. In standard form, the answer is 9.52 × 10⁻² cm³/minute.
How to determine rate of water loss?The tangent on the graph intersects the y-axis at 190 cm³. The slope of the tangent is 0.0952 cm³/minute. Therefore, the rate of water loss at 12:00 is 0.0952 cm³/minute. In standard form, the answer is 9.52 × 10⁻² cm³/minute.
To determine the rate of water loss at 12:00:
Find the intersection of the tangent with the y-axis. This will give you the amount of water loss at 12:00.
Find the slope of the tangent. This will give you the rate of water loss at 12:00.
Convert the rate of water loss from cm³/hour to cm³/minute by dividing by 60.
Express the answer in standard form by moving the decimal point two places to the left.
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in vessel elements and sieve tube elements, only sieve tube elements _____
Answers
In vessel elements and sieve tube elements, only sieve tube elements are alive.
What are vessel elements and sieve tube elements?
Sieve-tube elements are specialized cells in angiosperms that are responsible for conducting food. A sieve-tube element's long tube-like structure is made up of cells that have no nuclei, ribosomes, or vacuoles. Vessel elements are elongated cells in flowering plants' xylem that are specialized for water transportation.
They are shorter and broader than tracheid, and they are arranged end to end. Vessel elements are often found in pairs or clusters, and they have perforations in their end walls that allow for water to flow through them. Vessel elements and sieve-tube elements are non-living cells.
In both types of cells, the nuclei and other organelles are lost as the cells mature. However, sieve tube elements are unique in that they are living cells with organelles that can continue to function throughout the plant's lifetime. So, in vessel elements and sieve tube elements, only sieve tube elements are alive.
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During which phase(s) of mitosis are structures like the one shown in Figure 10–2 visible?
Answers
Answer:
Prophase
Explanation:
Not 100% sure though.
Answer:
Prophase
Explanation:
During prophase, chromosomes condense which is why it looks like that
you are walking and you step on a nail with your right foot. this will activate the crossed extensor reflex. which muscle groups) serve as agonist muscles to keep you from getting injured? select all that apply
Answers
Left quad and right hamstring muscle groups serve as agonist muscles to keep you from getting injured.
What are agonist muscles?The term "agonist" refers to the muscle that is contracting, and "antagonist" refers to the muscle that is relaxing or lengthening. The muscle that is in "agony" while you are performing the movement is the agonist, as it is the one that is doing all the work. This is one way to remember which muscle is the agonist.
The latissimus dorsi and the shoulder's deltoids (upper back) the trapezius and the pectoralis major (upper back) anterior tibialis and gastrocnemius (both anterior and posterior calf muscles).
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consider a population of cheetahs, inhabiting a protected area in africa. in 2012, there were 112 cheetahs in this population. during that year, 60 of those animals reproduced and 48 new cubs were born. what constitutes the gene pool of the new generation made of those 48 new cubs? multiple choice question. all of the alleles of all the genes in the 112 animals in 2012 plus all of the alleles of all the genes in the 48 newborn animals all of the alleles of all the genes in the 112 adult animals that made up the population in 2012 all of the alleles of all the genes that were passed from the 60 parents to the 48 new cubs all of the alleles of all the genes in the 60 parents that had those 48 cubs
Answers
The gene pool of the new generation made of those 48 new cubs constitutes all of the alleles of all the genes that were passed from the 60 parents to the 48 new cubs. Therefore, the correct answer is "all of the alleles of all the genes that were passed from the 60 parents to the 48 new cubs."
The gene pool refers to all the alleles (different forms of a gene) present in a population of organisms. In this scenario, the gene pool of the new generation made up of 48 cubs would be all the alleles of all the genes that were passed from the 60 parents to the 48 new cubs. This is because the new cubs inherit their genes from their parents, and therefore the gene pool of the new generation would be a combination of the genes present in the parent population. The other answer choices are incorrect because they either do not include the genes of the new cubs or include genes from sources other than the parent population.
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A scientific study demonstrated that rat mothering behavior impacts the stress response in their pups. Rats that were born and grew up with attentive mothers showed low activation of stress-response genes later in life, while rats with inattentive mothers had high activation of stress-response genes in the same situation. An additional study that swapped the pups at birth (i.e., rats born to inattentive mothers grew up with attentive mothers and vice versa) showed the same positive effect of attentive mothering. How do genetics and/or epigenetics explain the results of this study
Answers
Answer and Explanation:
Regarding genetics, the results of the study show that the mother's genetic material does not influence the behavior of rats in times of stress or in the biological responses of rats to these stressful moments. This is because the mice inherited their mothers' genes, but did not show the same results in a stressful situation when they were raised with different mothers.
Regarding epigenetics, however, we can see that the mothers' behavior in relation to the care of rats managed to provoke epigenetic changes that prevented or stimulated the expression of genes linked to stress, in these rats. The rats that were raised with attentive mothers showed a low expression of stress-linked genes, regardless of the biological mother they had. In addition, it is possible to notice that this modification is permanent, since the rats presented this same type of response throughout their lives.
axones negativas del medio ambiente
Answers
Answer:
Utilizar desodorantes en aerosolBeber agua en botella de plástico Arrojar un chicle al suelo Asearnos sin cerrar el grifo Consumir alimentos con aceite de palmaDejar las colillas en la playaSoltar un globo de helio al aire.Explanation