In humans, the correlation between recombination frequency and length of DNA sequence is, on average, 1 million bp per 1% RF. During the process of mapping the Huntington disease gene (HD), it was found that HD was linked to a DNA marker called G8 with an RF of 5%. (The Fast Forward box Gene Mapping Has Led to Treatments for Cystic Fibrosis explains that a DNA marker is a region of a chromosome in which differences in DNA sequence can be followed as alleles.) Surprisingly, when the HD gene was finally identified, its physical distance from G8 was found to be about 500,000 base pairs, instead of the expected 5 million base pairs. How can this observation be explained

Answer:

meter per second

Therefore, velocity is expressed in meters/second or m/s. The SI unit of velocity is meter per second (m/s). Alternatively, the velocity magnitude can also be expressed in centimeters per second (cm/s).

Explanation:

Brainliest please?

A correct unit of measurement for velocity is meters/second. Velocity is the rate at which an object changes its position in a specific direction over time.

The standard unit for measuring velocity in the International System of Units (SI) is meters per second (m/s). It represents the distance traveled in meters divided by the time taken in seconds, indicating both the magnitude and direction of the object's motion.

The options "North Meters/second" and "North" are not appropriate units of measurement for velocity. "North" represents a direction but does not provide information about the speed or magnitude of the object's motion. Additionally, "hours" is a unit of time and not directly related to measuring velocity.

Therefore, the correct unit of measurement for velocity is meters/second.

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The evolution of land plants has seen a clear trend towards an increase in the importance of vascular tissue and a decrease in the importance of water to bring sperm to egg.

Here, correct option is A and D.

The gametophyte phase has become larger in size, while the sporophyte phase has become smaller in size. This has been primarily driven by the need to survive and thrive in a terrestrial environment. Vascular tissue is essential for providing the plant with the necessary support and transport of water, minerals and nutrients from the soil, as well as for the exchange of gases with the atmosphere.

Meanwhile, the smaller size of the sporophyte phase allows for increased protection from dehydration and desiccation, as well as for increased mobility and easier dispersal of pollen and spores. In order to fertilize the egg, land plants have adapted to utilize wind-borne pollen, rather than relying on water currents.

Therefore, correct option is A and D.

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Answer: The correct answer is D. Organisms use DNA to replicate, and they have RNA to store the genetic information.

Explanation:

This is because DNA serves as the primary genetic material that stores the instructions for the development, growth, and function of all living organisms.

The process of transcription involves the transfer of genetic information from DNA to RNA, and it occurs in all organisms as a fundamental step in gene expression. The RNA molecules then serve as templates for the synthesis of proteins or perform various other functions, such as regulating gene expression, processing genetic information, and catalyzing biochemical reactions. Despite their diverse evolutionary histories and differences in genetic code, all living organisms share this core process of gene expression, which is essential for life.

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To find the absolute age of rocks, scientists use the radiometric dating method. Therefore, the closest answer is Option C- They analyze the percentages of radioactive isotope and daughter isotope.

One of the radiometric dating methods is carbon-14 dating. Since all living things absorb carbon from the food and atmosphere around them, they have an element of carbon. However, once it dies,  the carbon absorbed starts decaying. This method uses the decaying element to figure out the age of the fossil/rock.

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Answer:

Genotypes code the phenotypes and it makes instructions for it.

Explanation:

Answer:

Dimetrodon (/daɪˈmiːtrədɒn/ (About this soundlisten)[1] or /daɪˈmɛtrədɒn/,[2] meaning "two measures of teeth") is an extinct genus of non-mammalian synapsid that lived during the Cisuralian (Early Permian), around 295–272 million years ago (Ma).[3][4][5] It is a member of the family Sphenacodontidae. The most prominent feature of Dimetrodon is the large neural spine sail on its back formed by elongated spines extending from the vertebrae. It walked on four legs and had a tall, curved skull with large teeth of different sizes set along the jaws. Most fossils have been found in southwestern United States, the majority coming from a geological deposit called the Red Beds of Texas and Oklahoma. More recently, fossils have been found in Germany. Over a dozen species have been named since the genus was first erected in 1878.

Explanation:

Dimetrodon is often mistaken for a dinosaur or as a contemporary of dinosaurs in popular culture, but it became extinct some 40 million years before the first appearance of dinosaurs. Reptile-like in appearance and physiology, Dimetrodon is nevertheless more closely related to mammals than to modern reptiles, though it is not a direct ancestor of mammals.[4] Dimetrodon is assigned to the "non-mammalian synapsids", a group traditionally called "mammal-like reptiles".[4] This groups Dimetrodon together with mammals in a clade (evolutionary group) called Synapsida, while placing dinosaurs, reptiles and birds in a separate clade, Sauropsida. Single openings in the skull behind each eye, known as temporal fenestrae, and other skull features distinguish Dimetrodon and mammals from most of the earliest sauropsids.

The given description can be classified into two categories based on the Parasympathetic or Sympathetic division.

SYMPATHETIC:
- Releases norepinephrine to the heart
- Maintains blood pressure
- Increases the amount of air entering the alveoli of the lungs
- Active during physical stress
PARASYMPATHETIC:
- Associated with reduced energy expenditure
- Results in decreased urine production
- Decrease the frequency of impulses initiated by the sinoatrial node of the heart
- Stimulates the smooth muscles of the digestive tract

The autonomic nervous system is a part of the nervous system that controls the involuntary functions of the body such as heart rate, breathing, and digestion. It has two main divisions, the sympathetic and parasympathetic nervous systems, that work in opposition to each other to maintain balance in these bodily functions.

The sympathetic nervous system is responsible for the body's response to stress, commonly referred to as the "fight or flight" response. When activated, it releases the neurotransmitter norepinephrine to increase heart rate, blood pressure, and respiratory rate, while also decreasing digestive activity and urine production. This division is active during physical stress and is associated with reduced energy expenditure.

The parasympathetic nervous system, on the other hand, is responsible for the body's "rest and digest" response. It helps to conserve and restore energy by decreasing heart rate and blood pressure while increasing digestive activity and promoting relaxation. It maintains blood pressure by reducing the rate of cardiac output and dilating blood vessels. This division decreases the frequency of impulses initiated by the sinoatrial node of the heart and stimulates the smooth muscles of the digestive tract to help break down food and absorb nutrients.

Overall, the sympathetic and parasympathetic divisions of the autonomic nervous system work together to maintain the balance of bodily functions and respond appropriately to different situations.

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I think the first graph, I'm not positive though.

Answer:

I didn't think I'll be teaching again about this someday...

1.Why did you do it

2.What did it do to you?

3. I'm hungry

4. I'll help you after eating

5. Bye

6. *munch munch*

7. Corny right?

8. Bye again

9. Bye, for real

10.

Answer:

Ground burial.

Cremation.

Immurement.

Sky burial.

Burial at sea.

Composting.

Dissolution.

Other less common.

Explanation:

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Moves blood around the body

The circulatory system moves blood around the body. Therefore, option (B) is correct.

The circulatory system, also known as the cardiovascular system, is responsible for the circulation and transportation of blood, oxygen, and nutrients throughout the body. It includes the heart, blood vessels, and blood. The heart pumps blood to the lungs to become oxygenated, and then circulates the oxygen-rich blood to the rest of the body through arteries.

Veins carry deoxygenated blood back to the heart, where it is pumped to the lungs to receive oxygen. The circulatory system also plays a role in removing waste products from the body, such as carbon dioxide, and helps to regulate body temperature, pH balance, and fluid balance. The circulatory system is essential to maintaining the proper functioning of all cells, tissues, and organs in the body.

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Soap is a surfactant, or a compound that lowers the surface tension of a liquid. Soap, in particular, decreases the surface tension of water by weakening the hydrogen bonds that make water such a special substance.

The three sugars interacted with water molecules in different ways. Mannose, the least sweet of the sugars, formed longer and weaker hydrogen bonds with water than glucose or fructose. Fructose, the sweetest of the sugars, formed the shortest and strongest hydrogen bonds with water.

Oil molecules, however, are non-polar, and they can't form hydrogen bonds. If you put oil and water in a container, the water molecules will bunch up together and the oil molecules will bunch up together, forming two distinct layers.

Opposites attract, so this lopsided charge difference allows bonds to form between the hydrogen and oxygen atoms of adjacent H2O molecules. Each H2O can bind to a maximum of four neighbors through these so-called hydrogen bonds.

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Answer:

Protons and neutrons have very similar mass, while electrons are far lighter, approximately 11800 times the mass.

Protons are positively charged, neutrons have no electric charge, electrons are negatively charged. The size of the charges is the same, the sign is opposite.

Explanation:

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Magnesium is a trace mineral which functions as a cofactor for the enzymes involved in the formation of urea.

The formation of urea occurs through the Krebs-Henseleit cycle which is a multistep process that occurs for the removal of ammonia (NH₃) from the tissues.

Magnesium is required in two steps that involve the hydrolysis of ATP which are:

1. Synthesis of carbamoyl phosphate from bicarbonate and ammonia and phosphate group from ATP

2. Synthesis of argininosuccinate from citrulline and aspartate using ATP.

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Supportive cartilage disappears from the bronchial tree at the level of D. respiratory bronchioles.

Respiratory bronchioles are the smallest bronchioles that conduct air in the lungs, they are the branches of the terminal bronchioles that subdivide into several tiny tubes called alveolar ducts. Each alveolar duct divides into several alveolar sacs, and each sac contains several alveoli that are the basic functional unit of the lung. Respiratory bronchioles are lined with cuboidal epithelium that lacks mucous glands and goblet cells. They have smooth muscle fibers in their walls that regulate air flow into and out of the lungs.

The supportive cartilage disappears from the bronchial tree at the level of respiratory bronchioles because their walls become thinner as they enter deeper into the lung tissue. The absence of cartilage in respiratory bronchioles enables them to dilate and constrict efficiently during respiration. Apart from respiratory bronchioles, cartilage rings are present in the walls of trachea, primary bronchi, and bronchioles.

Their presence helps to maintain airway patency and protect the airway from collapse during breathing. In contrast, the absence of cartilage in respiratory bronchioles allows them to collapse during expiration, increasing the efficiency of gas exchange between blood and air. So the correct answer is D. respiratory bronchiotes is the level supportive cartilage disappears from the bronchial tree.

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Answer:

Trueeeee

Explanation:

trust :)

Answer:

The answer is option C.

Explanation:

Genetic traits are expressed by dominant and recessive genes, which show up in the phenotype according to their presence on the chromosomes.

Observing a trait that was not present in the previous generations suggests that this trait is recessive and did not have the chance to appear in the other generations before. This idea has led Mendel to the idea that traits were not controlled by only a single factor. So the answer is C.

I hope this answer helps.

Answer:

A trait that was not seen in the first generation may later reappear in the second generation.

Explanation:

The simplified form of \(X^{-12}\) would be \(\frac{1}{X^{12}}\)

According to one of the laws of indices:

\(X^{-1}\) is the same thing as \(\frac{1}{X}\)

Following this rule,  \(X^{-12}\) with thus be  \(\frac{1}{X^{12}}\)

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Answer:

i think B.

Explanation:

That destroys a habitat for many species

In the Rutherford's experiment the most particles have the same charge, so the same charges repel each other therefore the particles deflected.

In the Rutherford's experiment some of the particles deflected, honestly the Rutherford thought that the particles would fly straight through the foil. However, he found that the particles path would be shifted or deflected when passing through the foil. This is due to the fact that like charges repel each other. But the main reason is that the positive charge of the atom is spread throughout the atom that repelled and deflected the positively charged α-particles.

So we can conclude that in the Rutherford's experiment the most particles have the same charge, so the same charges repel each other therefore the particles deflected.

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high frequency of a genetic disorder in a human population due to chance is an example of genetic drift.

Genetic drift is the phenomenon by which the frequency of alleles in a population changes due to chance events rather than natural selection.

A population of humans with a high frequency of a genetic disorder, as seen in the Maracaibo area in Venezuela studied by Dr. Wexler, is an example of genetic drift.

This occurs due to chance events, such as a founder effect or a bottleneck effect, which can lead to a small subset of individuals having a higher frequency of a particular allele. Over time, this can lead to the allele becoming more prevalent in the population, even if it doesn't necessarily provide a selective advantage.

Genetic drift can have various effects on a population, including reducing genetic variation, and in some cases, leading to the fixation of certain alleles.

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Answer:

I would think throwing trash into the ocean?

Explanation:

Answer: C)

Introducing microorganisms to feed on the debris

Explanation: Edg 2021

Answer:

In red blood cells when carbon monoxide is inhaled or produced in normal metabolism. Formation of large quantities can hinder delivery of oxygen to the body.

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Temperature and available nutrients are two external factors which influence differentiation in plant stem cells .

What is differentiation process ?

It is the process in which meristematic tissues undergo permanent change , which as a result forms the specialized cells in the plant body .

Optimum temperature  and availability of nutrients helps the immature cells to grow into permanent ones . unavailability of these factors restrict the process .

Thus , these two factors plays an essential role in differentiation in plant stem cells.

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Answer:ARN and Available nutrients.

Explanation:

Answer:

200 ATP molecules

Explanation:

Yeast is a fungus that undergoes fermentation instead of cellular respiration when there is an absence of oxygen. In the fermentation process undergone by yeast, which produces an alcohol as product (alcohol fermentation), two (2) ATP molecules are produced as net ATP.

However, if a yeast cell undergoes fermentation and uses 100 molecules of glucose, the yeast cell will generate a net ATP of 2 × 100 molecules = 200 molecules.

Explanation:

We know that the disease is caused by the SARS-CoV-2 virus, which spreads between people in several different ways. The virus can spread from an infected person's mouth or nose in small liquid particles when they cough, sneeze, speak, sing or breathe.

Answer:

A. Golgi Apparatus

B. Vacuole

C. Mitochondrion

D. Nucleus

E. Cell membrane

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A gene mutation in which a single base pair in DNA has been changed is called a point mutation. Point mutations can have significant effects on an organism, particularly if they occur in a critical gene or regulatory region.

Point mutations are a type of genetic variation that can occur during DNA replication or repair, and they involve the substitution of one nucleotide (A, C, G, or T) for another in a DNA sequence.

Point mutations can be categorized into three types: silent mutations, missense mutations, and nonsense mutations. A silent mutation is a point mutation that does not change the amino acid sequence of the resulting protein, as the codon still codes for the same amino acid.

A missense mutation is a point mutation that changes the amino acid sequence of the protein, resulting in a different protein structure and potentially altered protein function. A nonsense mutation is a point mutation that introduces a premature stop codon into the mRNA, resulting in a truncated protein that is often non-functional.

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