Justin is looking at two chromosomes that have identical alleles for a particular trait.

What are these chromosomes consideredas?
heterozygous
homozygous
petit
queue

Answer:

sorry this is late but the correct ansewer is C

Explanation:

Answer:

C

Explanation:

Answer:

B. Amount of sunlight

Explanation:

The producers in the ocean are dependent on the amount of sunlight because that is one of the major things they need to get their food.

I hope this helps~

Electronegativity.

If the difference in electronegativity for the atoms in a bond is greater than 0.4, we consider the bond polar. If the difference in electronegativity is less than 0.4, the bond is essentially nonpolar.

Answer:

it controls a lot of things

Explanation:

I looked it up

During prophase I of meiosis, a diploid organism contains two copies of each gene, one from each parent.

During prophase I of meiosis in a diploid living being, there are two duplicates of every quality, one acquired from each parent. This is on the grounds that a diploid living being has two arrangements of chromosomes, one set from each parent, and every chromosome conveys an alternate form of a similar quality.

During prophase I, homologous chromosomes join together and structure a quadruplicate, considering getting over and trade of hereditary material between the homologous chromosomes. This guarantees hereditary variety in the subsequent haploid cells. Accordingly, at prophase I, the diploid creature has two duplicates of every quality on the homologous chromosomes, which might go through recombination to make remarkable mixes of hereditary data.

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The hypotheses classified according to Falsifiable or Non-Falsifiable are given as follows:

Falsifiable:

Reason: When limestone comes into touch with a weak acid, such as carbonic acid, it erodes. Basalt interacts with ocean water; the silicon tetrahedra in basalt break down, allowing silica into the solution. Given that both erode when they come in contact with seawater, the hypothesis is therefore falsifiable.

Reason: This is inaccurate because, while swimming in warm water boosts metabolism and speed since it is roughly 90 degrees Fahrenheit, swimming in cool water is safer because the bodies of living beings react better to cold water temperatures.

Non-Falsifiable:

Reason: It is right since the protected water in such regions is a haven for a plethora of red fishes. The mangroves are also near to beaches with lagoons, which are popular fishing spots.

Reason: It is right because each high tide feeds nutrients to the algae that live in such regions, allowing a complicated food chain among numerous creatures to refill.

A hypothesis or model is said to be falsifiable if an experimental observation can be made that disproves the notion in the issue.

That is, one of the possible results of the intended experiment must be a response that, if received, would refute the hypothesis.

If a statement, hypothesis, or notion is falsifiable, the potential of proving it wrong exists. It is non-falsifiable if there is no means to prove it wrong.

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Full Question:

Classify these hypotheses about the ocean as falsifiable or non-falsifiable:

1. No, the virus can be seen under a light microscope.

2. DxC880i and ISTAT are two types of science equipment that are used to study Ebola.

3. The two problems scientists face when trying to create vaccines for a virus are:-

Light microscopy is a powerful tool for the detection and analysis of parasites, fungi, and prokaryotes, however, has been difficult to apply for the detection of individual virus particles. Unlabeled virus debris is too small to be visualized through the use of well-known visible light microscopy.

Polymerase chain response (PCR) is one of the most commonly used diagnostic methods because of its ability to locate low levels of the Ebola virus. The analysis of Ebola virus disease is predicated on the detection of viral RNA in blood by using actual-time reverse-transcription PCR.

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Answer:

metaphase, anaphase, and telophase.

Explanation:

The article by Vesely TM explores the use of a purse string suture technique for closing percutaneous access sites after interventions on hemodialysis grafts.

This technique involves placing a circular suture around the site and tightening it to achieve hemostasis and secure closure. By utilizing the purse string suture, several benefits are observed, including a reduced risk of bleeding and infection, as well as faster healing.

The article provides valuable insights into the application and effectiveness of this technique in managing access site complications in patients undergoing hemodialysis.

Overall, the use of a purse string suture represents a promising approach for improving the outcomes and safety of hemodialysis graft interventions.

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a. DIY DNA extraction methods typically use household ingredients and may lack specialized reagents for optimal yield, purity, and efficiency compared to extraction kits designed with standardized protocols.

b. Differences can be assessed through factors such as protocol complexity, DNA yield, purity assessment, and reproducibility of results between DIY and kit-based extractions.

a. The DIY DNA extraction and an extraction using a kit can differ in several aspects:

Ease of Use: DIY DNA extraction methods often utilize household ingredients and materials, making them simpler and more accessible for amateur scientists or educational purposes. Kits, on the other hand, are specifically designed with pre-measured reagents and detailed protocols, providing a standardized and user-friendly approach.

Efficiency and Yield: DNA extraction kits typically incorporate optimized protocols and specialized reagents that ensure higher efficiency and yield of extracted DNA. DIY methods may not always achieve the same level of efficiency, leading to lower DNA recovery or potential contamination.

Purity and Quality: DNA extraction kits generally include steps and reagents to remove contaminants (such as proteins and RNA) and ensure higher purity of the extracted DNA. DIY methods may lack these purification steps, resulting in impurities or degraded DNA.

b. A few indicators can help determine the differences between DIY DNA extraction and kit-based extractions:

Protocol Complexity: Comparing the step-by-step procedures of DIY methods and kit-based methods can reveal differences in complexity and the presence of additional purification or quality control steps in kits.

DNA Yield: Quantifying the yield of extracted DNA can provide insights into the efficiency of the extraction method. If the yield from a DIY extraction is consistently lower compared to a kit-based extraction, it suggests that the kit-based method may be more efficient.

Purity Assessment: Evaluating the purity of the extracted DNA can be done through techniques such as spectrophotometry or gel electrophoresis. If the DNA extracted using a kit shows less contamination or degradation than the DIY-extracted DNA, it indicates better quality control in the kit-based method.

Reproducibility and Consistency: Performing multiple extractions using both the DIY method and a kit and comparing the results for consistency and reproducibility can also indicate differences in performance and reliability.

It's important to note that DIY DNA extraction methods can be useful for educational purposes or preliminary experiments, but for more precise and standardized results, DNA extraction kits developed by reputable manufacturers are generally recommended.

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Answer:

1. The Parkes radio telescope is a gigantic measuring instrument, used to examine a wide range of radio energies from our galaxy and other parts of the universe.

2. The remote location of the MRO ensures a radio quiet operating environment but makes access to basic infrastructure like roads and power a challenge.

3. whistling plasma ducts in the Earth's ionosphere and some of the youngest and weirdest radio galaxies ever found.

4. only around 800 giants have been found.

5.

Explanation:

sorry it took long to answer

please make this the

Answer:

Ex vivo gene therapy - this is carried out by removing the intended cell from the patient's body before administration of the gene therapy, after which the cell is returned.

In vivo gene therapy - this is carried out directly on the cell while its still on the patient's body.

Explanation:

Ex vivo, Latin for "out of the living" is a process that takes place outside an organism. Scientifically, ex vivo involves experiments that are conducted outside of a living body; the tissues or organs are taken out of the body, experimented on and returned.

In vivo which is Latin for "within the living" on the other hand is a process that take place outside an organism. Unlike ex vivo, it involves experiments that are conducted with or within a living body.

Gene therapy refers to a process that is carried out to alter the genetic make up of an individual with the intent of treating a disease.

In ex vivo gene therapy, the intended cells are removed from the patient's body and the gene therapy is applied to the cells before they are put back in the patient's body. But with in vivo gene therapy, the gene therapy is applied directly on the intended cells while its on the patient's body.

In humans, an aneuploid condition results when one gamete has 24 chromosomes and is united with a normal gamete having 23 chromosomes.

Aneuploidy occurs due to a process called nondisjunction, where chromosomes fail to separate properly during cell division, specifically during meiosis. This leads to the formation of an abnormal number of chromosomes in the resulting gametes.

When an aneuploid gamete with 24 chromosomes unites with a normal gamete containing 23 chromosomes during fertilization, the resulting zygote will have a total of 47 chromosomes instead of the normal 46. This abnormal number of chromosomes can cause various genetic disorders, depending on which chromosome is affected.

For example, when the aneuploidy involves an extra copy of chromosome 21, the individual will have Down syndrome, which is characterized by intellectual disabilities, developmental delays, and distinct physical features. Another example is Klinefelter syndrome, where an individual with an extra X chromosome (XXY) experiences a range of physical and developmental symptoms, including reduced fertility and testosterone production.

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Answer:

The solution with the higher concentration of solutes (a.k.a liquids/water)

Answer: 2

Explanation:

Answer:

Predator/Prey relationship

Explanation:

The relationship between Venus flytrap and insect describes a predator/prey relationship with the venus flytrap being the predator while the insect plays the role of prey.

The Venus flytrap is considered a carnivorous plant due to its ability to predate and feed on insects in order to fulfill certain nutritional requirements. It is adequately equipped to sense the presence of insect's movement on its bristles and then trap it by closing the lobes.

Answer:

predation

Explanation:

Answer: The colour of A before the starch test is GREEN while after the starch test is BLUE- BLACK. The equation for photosynthesis is

6CO2 + 6H2O → C6H12O6 + 6O2.

Explanation:

PHOTOSYNTHESIS is the process by which green plants use energy from sunlight to manufacture their own food. It is a building up process since simple inorganic compounds such as carbondioxide and water are built up into large organic compounds such as glucose and OXYGEN is given off as a by product.

Oxygen given out in photosynthesis occurs in the light stage during the process of photolysis of water. This occurs when the chlorophyll traps, absorbs and captures light energy and become energised. The energised chlorophyll supplies energy which is to split molecules of water into hydrogen ion ( H+) and hydroxyl ion ( OH-). The hydroxyl ion is reconverted to water and oxygen is given out as a by product.

To show that chlorophyll is NECESSARY for photosynthesis, a variegated leaf with green and yellow patches is used for an experiment.

The green portion is marked A and the yellow portion marked B. The leaf is tested for starch using the procedure below:

--> place leaf in boiling water for half a minute to kill it.

--> decolorize leaf by placing it in hot alcohol.

--> dip decolorize leaf in hot water to soften it.

--> place leaf on tile and add iodine solution to it.

RESULT: It would be found that only the green parts contain starch as blue+black colouration is observed while yellow area is unaffected by iodine.

Answer:

Option 2

Explanation:water cycle process never ends

The statement is false about the water cycle is It has a beginning and end. Option 2 is the answer for the water cycle, as it is cyclic process that happens in nature, so it has no beginning and no end.

The water cycle takes place in the ecosystem to maintain the water level, and it is done by different processes. The plants release water through transpiration and cellular activities, and this goes into the water cycle.

The sun plays an important role in this because, due to temperature differences, water evaporates from water bodies and is released into the environment . All this water goes and forms clouds at lower temperatures to form rain that falls on the earth, and in this way the water cycle continues with the help of living things (plants and animals), the sun, and the water recycling every time.

Hence the answer is option 2, which says it has a beginning and an ending.

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Secreted together with gastric juice, by the stomach mucosa, pepsinogen is transformed into pepsin  by the action of the acidic environment of the stomach, due to HCl also present in stomach juice.

Pepsin is a digestive enzyme that is produced by the walls of the stomach, being activated by gastric juice, and whose function is to break proteins down into simpler peptides (amino acids).

It only reacts in acidic medium. Therefore, the stomach also produces hydrochloric acid (HCl). When in contact with hydrochloric acid, pepsinogen (an "inactive" enzyme that is present in gastric juice) turns into pepsin, which is "active".

With this information, we can conclude that pepsin is a specific digestive enzyme for digestion, produced in the stomach.

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Answer:

I think your answer is: Different genes are activated in gastric cells compared to skin cells

Explanation:

The blood's qualities are what qualify it as connective tissue. It is housed in the vessels that "link" the various components of an organism's body. Hence, the answer is (C).

There are four main forms of animal tissue: epithelium, muscular, connective, and nervous. Connective tissue, often known as fibrous tissue, is one of these four. The mesenchyme, which is derived from the mesoderm, the intermediate embryonic germ layer, is where it develops. Every part of the body, including the nervous system, has connective tissue that lies in between other tissues.

The three meninges, which are connective tissue-based membranes that surround the brain and spinal cord, are made of.

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DNA is 99.9% identical from person to person as individual although 0.1% difference doesn't sound like a lot it actually represents millions of different locations within the genome where variation can occur.

DNA is the hereditary material in humans and almost all other organisms the molecule inside cells that contain the genetic information responsible and function of an organism.

DNA is a linear molecule composed of four types of smaller chemical molecules called nucleotide bases such as:

Therefore DNA is 99.9% identical for individual its  a hereditary material in human and almost all other organisms.

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Answer: The answer is D girrafes long neck

Explanation: because they absoluty have to have it and its fine ill always gladly help

Answer:

A bird building a nest

Explanation:

Behavior patterns are based upon instinct.

Answer:

when a dominant allele, or form of a gene, does not completely mask the effects of a recessive allele, and the organism's resulting physical appearance shows a blending of both allele

Explanation:

Cross-pollination between red snapdragons and white snapdragons result in pink when neither the white or the red alleles are dominant.

Answer:

Sample Answer:

Incomplete dominance is seen in offspring that have a third phenotype not seen in the parents. Snapdragons are an example. The third phenotype results when a snapdragon with the red pigment protein crosses with a snapdragon with a defective gene that produces no pigment, resulting in a white snapdragon. The offspring receive one allele from each parent, resulting in half the amount of pigmentation for red color being expressed. The offspring will be pink snapdragons instead of red or white.

Explanation:

EDG 2021

The expected habitat of a fish that possesses the ability to produce copious amounts of urine and the ability to move ions via active transport across the gills would be c. Fresh water.

Freshwater fish must produce a significant amount of urine to maintain their internal salt levels as the salt concentration in their external environment is lower than in their internal environment.

This excess urine production helps them excrete excess water and retain the necessary salts for survival. An important adaptation for freshwater fish is the ability to transport ions actively across their gills. This ability allows them to take up salts actively from the water and maintain their internal salt levels.

If freshwater fish were unable to transport ions actively across their gills, they would be unable to regulate their internal salt levels effectively and would be at risk of dying.

In summary, the ability to produce large amounts of urine and actively transport ions across their gills are essential adaptations for freshwater fish to regulate their internal salt levels effectively and survive in their environment.
Therefore, the expected habitat of a fish with these traits would be fresh water.

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Answer:

Synthesis of organic molecules

Explanation:

because i said so

According to chemical evolution, synthesis of organic molecules would need to occur first for life to evolve. Option C is correct.

The theory of modern chemical evolution is based on postulate that, on primitive earth, the most complex molecular system, which lead to formation of first functioning cell, arise from mixture of simpler chemicals.

Chemical evolution of organic chemicals was preceded by the and physical chemical conditions of the primitive Earth. A two step process is proposed by scientists to explain life origin :

Therefore, concept of biogenesis must be placed for evolution of in chemical evolution. Thus, option C is correct.

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A ribosome bound to the endoplasmic reticulum (ER) translates mRNA molecules into proteins.

The mRNA is recognized by the ribosome and the proteins are synthesized according to the instructions encoded in the mRNA.

The proteins produced are divided into two categories; secreted and membrane-associated proteins. Secreted proteins are those released from the cell, while membrane-associated proteins are anchored to the ER membrane.

The ribosome utilizes the amino acid sequence encoded in the mRNA to construct the protein. After construction, the protein is either released from the cell or attached to the membrane.

Therefore, the type of protein translated by a ribosome bound to the ER depends on the mRNA it is reading.

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Answer:

Foraminifera (forams for short) are characterized as unicellular protists that have shells

Answer:

D) A thermostat switching on an air conditioner when the temperature gets too hot

Explanation:

All other answers choices are negative feedback.

hope this helped!

A thermostat switching on an air conditioner when the temperature gets too hot is an example of positive feedback. Option D is correct.

Positive feedback is a process in which a change in a system causes further changes in the same direction, leading to an ever-increasing effect. In the case of a thermostat, the increase in temperature causes the thermostat to switch on the air conditioner, which cools down the room. This cooling down causes the thermostat to switch off the air conditioner, which then allows the temperature to rise again. This cycle continues until the temperature reaches a desired level.

In negative feedback, a change in a system causes other changes in the opposite direction, leading to a return to the original state. For example, when a herd of buffalo runs away after one of them spots a lion, the other buffalo will also run away, which will reduce the number of buffalo in the herd that are in danger. This will eventually lead to the herd returning to its original state. Option D is correct.

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