What is not an environmental factor that influences genetic variation

Answers

Answer 1

Answer: Environmental factors can influence natural selection because they can increase or decrease

Hope this help

Answer 2

Answer:

Radiation, chemicals, and infectious agents influence genetic variation, so I would say that something like natural disasters would not influence genetic variation.

Explanation:

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Related Questions

explain the effect of the selective pressure on the more and less adapted individuals in a population

Answers

Answer:

Due to the variation in the population, some individuals are better adapted and able to survive and reproduce in the presence of the selective pressure while the less adapted do not survive and reproduce as successfully This leads to a shift in population more individuals with the adaptation

What statement is true about X chromosomes?

A: Only men have them
B: Women have two of them
C: Half of the babies born do not have them
D: Only women have them

Answers

Answer:

b

Explanation:

men and women have x chromosomes but women have 2

Some insect species are resistant to pesticides. Which statement BEST explains this phenomenon? Natural selection resulted in an unfavorable variation for the insects. Because their survival depended on it, the insects developed variations that made them resistant to poisons. Random variation in the population led to a population with a favorable adaptation. Some of the insects became instantly immune when the poisons were introduced into their environment

Answers

Answer:

Random variation in the population led to a population with a favorable adaptation

Explanation:

Insecticide resistance can be defined as an evolutionary process that causes a decreased susceptibility of an insect population to a particular insecticide. The evolution of the insecticide resistance occurs by the mechanism of natural selection, where most resistant insects survive and thus pass on their acquired heritable resistance to their offspring. Moreover, the evolutionary origins of the resistance trait may be associated with different processes: 1-de novo mutations (i.e., the emergence of beneficial genetic changes in the population), 2-standing variation in the original population which is selected under the selective agent (in this case, the pesticide), 3-migration of resistant specimens originally resistant to the pesticide, and 4-even interspecific transfer (i.e., horizontal transfer between different species).

cells will swell when placed in a solution that is:

Answers

Answer:

Hypotonic

Explanation:

Fill In The Blank In some situations, a single character is controlled by two or more different genes, each with two or more alleles. this phenomenon is called gene ______

Answers

In some situations, a single character is controlled by two or more different genes, each with two or more alleles. This phenomenon is called gene interaction.

Gene interaction refers to the phenomenon in genetics where the expression of a particular trait or characteristic is influenced by the interaction of multiple genes. In some cases, a single character or phenotype is determined by the combined effects of two or more genes, with each gene having multiple alleles.

Gene interaction can take different forms, such as epistasis, where the expression of one gene masks or modifies the effect of another gene. Another form is polygenic inheritance, where multiple genes contribute to a trait in a cumulative and additive manner.

These interactions occur at the molecular level, where the proteins encoded by different genes interact or influence each other's function. The combined effects of these genes and their alleles determine the ultimate phenotype or observable trait.

Understanding gene interactions is crucial in unraveling the complexity of inheritance patterns and phenotypic variation. It helps explain why individuals within the same species can exhibit a wide range of characteristics, even when they share the same genes.

Studying gene interaction provides insights into the underlying mechanisms of genetic inheritance and contributes to fields such as genetic mapping, evolutionary biology, and personalized medicine.

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How did the Cuyahoga RIver in 1969 impact the future of our environment?

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Answer:

Answer:The 1969 Cuyahoga River fire catalyzed water pollution control activities, resulting in the creation of the federal Environmental Protection Agency (1970) and the Ohio Environmental Protection Agency (OEPA), and passage of the Clean Water Act (1972) and the Great Lakes Water The Cuyahoga River has caught fire a total of 13 times dating back to 1868. But the fire in 1969, helped spur action that ultimately led to the passage of the Clean Water Act in 1972. Later that year, Congress passed the National Environmental Policy Act.Quality Agreement (1972).

Explanation:

In a data set, the number that appears the most is called the_________.

Answers

It is called mode I think

What are 2 ways the carbon cycle interacts with the atmosphere.

Answers

Answer:

Carbon moves from living things to the atmosphere. Each time you exhale, you are releasing carbon dioxide gas (CO2) into the atmosphere. Animals and plants need to get rid of carbon dioxide gas through a process called respiration. Carbon moves from fossil fuels to the atmosphere when fuels are burned.

You are examining an organism recently found on Mars and are currently trying to identify one of its neurotransmitters. Biochemical characterization indicates that it is a derivative of the amino acid tyrosine, so you classify the novel neurotransmitter as a(n)

Answers

Answer:

Tyrosine derived neurotransmitters

Explanation:

These neurotransmitters are produced as a result of the conversion of tyrosine when not incorporated into proteins or energy production is converted to catecholamines.

These catecholamines includes dopamine, norepinephrine, and epinephrine.

All these three catecholamines produce various effects in numerous locations in the body acting either as a neurotransmitter or as a hormone

as the heart beats, friction between the pericardial membranes is prevented by:

Answers

As the heart beats, friction between the pericardial membranes is prevented by the presence of a thin fluid-filled sac called the pericardial cavity.

The pericardial cavity is located between the two layers of the pericardium, which are the fibrous pericardium (outer layer) and the serous pericardium (inner layer). The serous pericardium consists of two layers, the parietal pericardium (outer layer) and the visceral pericardium or epicardium (inner layer). Within the pericardial cavity, a small amount of serous fluid is present. This fluid acts as a lubricant, reducing friction between the parietal and visceral layers of the serous pericardium as the heart beats.

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The passing of traits from parents to offspring is called

A heredity.

B dexoxyribounucleic acid , or DNA.

C cloning.

D precipitation.

Answers

A. Heredity

Pretty easy

Technological advancement of the society causes energy crisis in different parts of the world. one group of scientists has developed a plan to set up tidal power plants in different parts of the world to reduce the energy crisis. which of these statements best describes a drawback in the scientists' plan?

Answers

Limited installation sites best describes a drawback in the scientists' plan because tidal energy is not present everywhere.

Describes a drawback in the scientists' plan?

The big disadvantage of tidal power is that there are limited installation sites for it. It is expensive as well as the turbines can adversely impact the surrounding ecosystem.

So we can conclude that limited installation sites best describes a drawback in the scientists' plan because tidal energy is not present everywhere.

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what is the car's acceleration from 0 to 1 second

Answers

Answer:

What do you mean?

Explanation:

Tay-sachs disease is a lethal, autosomal recessive genetic disorder. If both parents are heterozygous carriers of the disease, what are the chances of them having a child who is also a heterozygous carrier for tay-sachs?.

Answers

With each pregnancy, there is a 25% chance that two carrier parents will both pass the altered gene and have an affected child with Tay-Sachs disease.

Is Tay-Sachs disease always fatal?

Tay-Sachs children frequently die before the age of four, usually from pneumonia complications. There is no cure, and treatment focuses on assisting the child and keeping them comfortable. For couples who may be at a higher risk of having a child with Tay-Sachs, genetic testing is available.

Tay-Sachs disease is a rare genetic disorder that is passed down from father to son. It is caused by the lack of an enzyme that aids in the breakdown of fatty substances. These fatty substances, widely recognized as gangliosides, accumulate to toxic levels in the brain and spinal cord, hampering nerve cell function.

Therefore,  If both parents are heterozygous carriers of the disease, there is a 25% chance of their having a child who is also a heterozygous carrier for Tay-Sachs.

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How did you determine how much food to feed Snappy each week? Using Data Table 1, describe how the
amount of food Snappy was fed each week impacted her weight gain.
Write your answer here.

Answers

The amount of food Snappy ate impacted her weight gain as a result of the large volume taken in.

What is Food?

This is a substance which contain a lot of nutrients and is eaten by organisms for their survival.

When a person eats much, the body converts some of the excess nutrient into fats thereby causing weight gain in individuals.

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what is the largest bone in the human body?​

Answers

Answer:

Femur bone

Explanation:

Answer is femur bone

Femur is the largest bone in the body


Which of these zones is also known as the midnight zone?
A. Bathypelagic
B. Abyssopelagic
C. Hadalpelagic
D. Epipelagic
SUBMIT

Answers

A.

The Bathypelagic zone has no visible sunlight. This why it is referred to as the midnight zone.

An animal cell left and a plant cell right are shown which two cell parts are most likely found in both types of cell

Answers

Nucleus
Mitochondria
Ribosome

describe the causes, frequency, and consequences of mass extinctions over the last 500 million years

Answers

A mass extinction event occurs when a species disappears far more quickly than it is replaced. This is typically understood as the loss of almost 75% of the world's species in a "short" period of geological time, or less than 2.8 million years.

Extinction is inevitable in changing worldLife on Earth has been on the verge of extinction five times in the last half-billion years due to factors like climate change, an extreme ice age, volcanoes, and that space rock that slammed into the Gulf of Mexico 65 million years ago and wiped out the dinosaurs and a number of other species.Nearly 95% of marine species were exterminated during the pre-Cambrian mass extinction. Therefore, there is a slim chance that mankind will survive the disaster.The fossil record shows that the vast majority of species that have ever lived are now extinctOver the past 500 million years, 5 mass extinctions have occurred and in each event, more than 50% of Earth's species went extinct.

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Glucose molecules contain stored energy for plants. Glucose is made from carbon dioxide and water molecules during photosynthesis. What kind of energy do plants use to make glucose molecules? A Electrical B Sound C Light D Kinetic

Answers

Answer:

The correct answer is - C. light.

Explanation:

In plants, glucose is formed or produces by the process called photosynthesis, a process that uses light energy to produce glucose with the help of carbon dioxide and water.

In this process, light energy is converted into chemical energy stored in glucose or sugars. The process involves light energy, CO2, and water and produces, glucose, and oxygen as a by-product.

1. The cestodes or tapeworms have a complex life cycle in which____ are released and pass out of human host in feces. Intermediate host like farm animals become infected via contaminated food and-or water. Humans become host again by consuming ____.

A. proglottids; larvae in undecooked meat

B. fertilized eggs; mature worms in undercooked meat

C. larvae; mature worms in undercooked meat

D. Proglottiids; mature worms in undercooked meat

Answers

Tapeworms have a life cycle in which proglottids are released in feces, farm animals become infected by consuming contaminated food or water, and humans become hosts again by consuming undercooked meat containing larvae. The correct answer to the question is: A. proglottids; larvae in undercooked meat.

The cestodes, also known as tapeworms, have a complex life cycle. In this life cycle, proglottids or segments of the tapeworm are released from the human host and passed out in feces. These proglottids contain fertilized eggs. The intermediate host, such as farm animals, can become infected by ingesting contaminated food or water that contains these eggs. Once inside the intermediate host, the eggs develop into larvae.

Humans can become hosts again by consuming undercooked meat that contains the mature worms. When a person consumes the undercooked meat, the larvae from the meat will develop into mature worms inside their intestines, completing the life cycle of the tapeworm.
The proglottids, containing the fertilized eggs, are released from the human host and passed out in feces. The intermediate host, such as farm animals, become infected by consuming contaminated food or water that contains these proglottids. Humans become hosts again by consuming undercooked meat that contains the larvae. The larvae then develop into mature worms in the human intestines.

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which of the following statements are true for human erythrocytes? 1. oxygen diffuses through the phospholipid bilayer. 2. sodium ions diffuse through the phospholipid bilayer. 3. water passes in and out of these cells by osmosis. a. 1 and 2 b. 1 and 3 c. 2 and 3 d. 1, 2 and 3

Answers

The cell membrane's phospholipid bilayer allows oxygen molecules to move through it. This is because oxygen is a little, nonpolar particle. The correct answer is (A).

Red blood cells, or RBCs, are the erythrocytes. RBCs that are mature and in circulation do not have a nucleus.

The blood transports nearly 70% of carbon dioxide as bicarbonate, 20-25% as bound RBCs, and approximately 7% as dissolved plasma. However, RBCs (as bound to hemoglobin) transport nearly 97% of oxygen, while plasma transports the remaining 3% in a dissolved state.

Biconcave, anucleate, and bright red, erythrocytes lack a nucleus. They are adept at maneuvering the circulatory system due to their concave, smooth, and pliable nature. Hemoglobin is a protein found in red blood cells. Each of the four subunits that make up hemoglobin contains a heme group.

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A normal muscle cell produces the myosin protein, which allows muscles to contract. You discover a single muscle cell that has trnas that do not bind to amino acids. Will the myosin gene be expressed in this muscle cell? why or why not?.

Answers

No, because translation cannot take place if the tRNAs do not bind amino acids.

What is myosin in muscle contraction?

Myosin's motor activity causes its head groups to travel down the actin filament in the plus-end direction. This motion shortens the sarcomere and causes the muscle to contract by sliding the actin filaments from both sides of the sarcomere toward the M line.

What is  myosin gene?

Myosinogen (countable and non-countable, plural: myosinogens) (biochemistry) The myosin generated during rigor mortis is obtained from a globulin, one of the two main proteins of muscle tissue.

Myosin light chain kinase (MLCK), which is present in all vertebrate muscle cells as well as numerous non-muscle tissues, only has myosin as a recognized in vivo substrate.

Where does myosin reside in a cell?

Myofibrils, the contractile unit of a muscle cell, are where myosin molecules are found in muscles. An element of the cytoskeleton called actin filaments and myosin molecules interact.

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what is the resulting amino acid change at position 557 of the taster allele?

Answers

The resulting amino acid change at position 557 of the taster allele is PAV. The AVV allele codes for the valine amino acid at position 262 and the alanine amino acid at positions 49 and 296.TAS2R38 AVI/AVI individuals are PTC non-tasters, PAV/PAV individuals are PTC super-tasters, and AVI/PAV individuals are PTC medium tasters.

The resulting amino acid change at position 557 of the taster allele is PAV (Proline-Alanine-Valine). Taster alleles control the sensitivity to the bitter taste of the compound phenylthiocarbamide (PTC) and other related substances such as 6-n-propylthiouracil (PROP).The difference in perception of these compounds is due to variations in the genes that encode taste receptors.

TAS2R38 gene is the principal gene that encodes PTC taster status. TAS2R38 gene has three common variants: AVI, PAV, and AVV. A change in the amino acid sequence of the protein that is encoded by the TAS2R38 gene is responsible for the variation in the receptor’s function.The AVI allele codes for the proline, alanine, and valine amino acids at positions 49, 262, and 296, respectively. The PAV allele codes for the amino acids alanine, valine, and isoleucine at these positions.

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Which statement about chromosomes is correct?

1.A gene is made up of one allele on a single chromosome. A person’s sex cells contain that single allele.

2.A gene is made up of two alleles on the same chromosome. A person’s sex cells contain one of the alleles.

3.A gene is made up of one allele spread over two chromosomes. A person’s sex cells contain that single allele.

4.A gene is made up of two alleles on separate chromosomes. A person’s sex cells carry one allele for each gene.

Answers

Answer:

4 option is correct

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okkk

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Which of the following is not part of the excretory system?

A. Digestive system
B. Respiratory system
C. Urinary system
D. Muscular system

(Please help!!)

Answers

Answer:

the muscular system is not part of the excretory system

muscular system is not a part of the excretory system

What kind of molecules were formed by abiotic synthesis? How did they form?

Answers

Answer: Abiotic processes synthesized small organic molecules, such as amino acids and nucleotides. These monomers were joined into polymers, including proteins and nucleic acids. Polymers were packaged into “protobionts,” droplets with membranes that maintained an internal chemistry distinct from their surroundings.

Explanation:

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Explain the difference between Biophilia and Biomimicry. Use Integral Theory to support your answer.

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Explain the difference between Biophilia and Biomimicry. Use Integral Theory to support your answer.

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Biophilia and biomimicry are two concepts that explore the relationship between humans and nature, but they differ in their focus and applications.

Biophilia is the innate human affinity and connection with nature. It suggests that humans have an inherent inclination to seek connections with the natural world. Biophilia acknowledges the positive impact of nature on human well-being, both physically and mentally. It emphasizes the importance of incorporating nature into our built environments and design to enhance our overall quality of life.

On the other hand, biomimicry is an approach that draws inspiration from nature's designs, processes, and systems to solve human challenges and create sustainable solutions. Biomimicry involves observing and learning from nature's patterns, structures, and functions and applying them to develop innovative technologies, materials, and strategies. By emulating nature's time-tested solutions, biomimicry aims to create more efficient, sustainable, and harmonious human-made systems.

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Scientists can find new discoveries that change their current understanding of scientific knowledge.

Answers

Answer:

Change is the only thing that is constant in this world. Obviously, more discoveries would be made in the nearest future that will give their thought about science a new direction.

Explanation:

__________ will increase soil nitrates, while ___________ will decrease soil nitrates.

Answers

Animal manure will increase soil nitrates, while fast growing crops will decrease soil nitrates.

What will decrease soil nitrates?

Denitrification and dissimilatory nitrate reduction to ammonium (DNRA), two significant nitrate-reducing mechanisms in soil, are in charge of nitrate (NO 3 ) loss and the creation of nitrous oxide, a powerful greenhouse gas (N2O).

What increases nitrogen in soil?

Naturally occurring sources of nitrogen addition to soil include air deposition from rainfall and N fixation by soil bacteria and legumes. Usually, fertilizers, manure, or other organic sources provide the crop with extra N.

What causes low nitrogen in soil?

N deficiency is associated with the type of soil and is typical in sandy, well-drained soils with rapid nitrogen loss. Overwatering owing to excessive irrigation and heavy rains results in nitrogen shortage. The ability of plant roots to absorb water-soluble nutrients is hampered by a lack of soil moisture.

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If 400 mL of a 40 %w/v solution is diluted to 1000 mL, what will be the percentage strength of the resulting solution(%w/v)? at a dinner party, guests were served dishes of soup, rice, and tofu. every dish of soup was shared by two guests, every dish of rice was shared by three guests, and every dish of tofu was shared by four guests. every guest ate from exactly one dish of soup, one dish of rice, and one dish of tofu. if the total number of dishes was 65, then how many guests were there? What is 6.25 divided by 132? Please I need an answer Which of the following defines the wavelength of a wave? A man weighing 800 N is standing on a chair .In order to support the man what force is the chair exerting WILL MARK BRAINLY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Which factors appear to be responsible for the delayed action by the international community in response to the genocide in Rwanda? what does an endotoxin value of 250 EU/kg mean can someone pls complete the story just one more paragraph :-( the follow set of data represents orders filled per day, find the sample standard deviation: 5, 13, 9, 10, 5, 12 round your answer to one decimal place. What is the role of election?. Give the phenotype percentages of the children of parents, one of whole has type A blood (heterozygous) and the other, type AB. During a baseline fitness test, Horatio sits on the ground and reaches for his toes.What is he MOST likely testing?his flexibilityhis cardiovascular endurancehis body compositionhis muscular strength An Inspector Calls: HELP I NEED THE ANSWER ASAP 100 pts. and branliestWrite a PEEL paragraph of how Mr. Birling shows poor fatherhood throughout the play.P - PointE - EvidenceE - EvaluateL - Link -3 2/5 - 5/6I dont just need the answer. I wanna know how to do it. what value does the output of g approach as the number of gallons supplied increases without bound? (12.28) in a table of random digits such as table b, each digit is equally likely to be any of 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9. what is the probability (0.1) that a digit in the table is a 7? Suppose that food shortages are expected in the near future.What happens to the market for farmland today?(A) Demand rises.(B) Demand declines.(C) Supply rises.(D) Supply declines. Alyah purchased 1,000 commercial bills; each cost her $95 andwill be matured after 2 months with the face value of $100 per eachbill. Her EAR will be (round your answer to" a simple random sample of adults living in a suburb in a large city TELL ME IF YOU AGREE IF NOT WHAT SHOULD I CHANGE??! THX