Natural selection requires there to be a variation of alleles in a population. What mechanism best describes how new alleles are formed in a population

Answers

Answer 1

Answer:

Natural selection does not create adaptions, mutations, or variations. Natural selection causes the extinction of individuals who are not well adapted to changes in the environment. Natural selection can also provide reproductive advantages for some individuals over other individuals.


Related Questions

If there is no fertilization, degeneration of the corpus luteum results in a drop in _____, which results in the sloughing off of the uterus's endometrium.

Answers

Degeneration of the corpus luteum results in a drop in progesterone production.

What is progesterone?

Progesterone is a hormone produced by the corpus luteum that allows the uterus to prepare for fertilization. The halt in production of this hormone then causes the sloughing of the uterus's endometrium, which results in the individual undergoing the process of menstruation.

Therefore, we can confirm that the degeneration of the corpus luteum results in a drop in progesterone production.

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Which term describes the tendency to maintain a balance, or optimal level, within a biological system?.

Answers

Answer:

Homeostasis

Explanation:

Hope it helps :)

How are meiosis and mitosis different?

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Answer:

to sum it up:  Mitosis is a.s.e.x.u.a.l, while meiosis is s..x.u.a.l.

Explanation:

another example: In meiosis, daughter cells possess only half the chromosomes of the original cells; while in mitosis the number of chromosomes is the same in both mother cells and daughters.

Which of the following is most affected by natural selection?
Angora rabbits
Merlot grapes
Influenza (The Flu)
Poodles

Answers

Answer:

Influenza (The Flu)

Explanation:

Influenza (the flu virus) is a real-life example of natural selection that is most evident during an annual time period when the influenza virus infection peaks. The repeated or cyclical nature of flu outbreaks is caused by the natural selection of the virus for traits that allow it to evade the immune system and replicate, a process that actually results in new distinct strains of influenza virus.

Which observation could lead to the conclusion that an object is nonliving?

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Answer:

[tex]beinggreat78~here~to~help.[/tex]

The object does not move. It does not breathe.It has no cells.

All living things are made of cells.

what are the challenges and opportunities moving forward

Answers

28 goals . and how u set them ! sorry if i’m wrong

I will mark brainiest

Answers

The answer is A because is saying that they didn’t got all the goals

A subset of a population selected to represent the population is:.

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A representative sample.

Which of the following explains why animals need more food when it is cold?

Answers

winter

Explanation:

because during winter animal are few

Hello people ~
Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because
(a) nodes are shorter than intemodes
(b) nodes have meristematic cells
(c) nodes are located near the soil
(d) nodes have non-photosynthetic cells​

Answers

Answer:

(b) nodes have meristematic cells

Explanation:

nodes have meristematic cells for the formation of new cells in seedlings

→ rapid buildup of tissues in many parts of the plant

At which point in the cell cycle should dna repair occur?.

Answers

Answer:

G1, S, G2

Explanation:

[RM.04]The picture below shows a soll texture triangle.

A soll sample contains 20 percent sand, 10 percent clay, and 70 percent silt. What type of soil is present in the sample?
O clay
O silt loam
O silty clay loam
O clay loam

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Silt Loam; you use the lines coming out of each number to determine the texture. Clay is on the left, sand on the bottom, and the right side is silt.

What type of research study is best for placing objects into categories?

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answer is going to be: comparison

did the air pockets in the bird bone affect the strength of the bone​

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Answer:

The pneumatization of avian bones allows them to be much more efficient with respiration and provide an extraordinary amount of strength compared to their weight. This connection of air sacs to the bone does cause some complications if the bone is damaged or broken.

If a ballon uses heat as energy to rise, how do you think it is able to come back down to the ground? Where does the energy go?

Answers

Answer:

I think the heat cools and the bloon is brought back down

Explanation:

hope this helps

PSYCHOLOGY: Personal characteristics such as one’s __________ and __________ are often stable throughout one’s lifetime. A. temperament . . . emotionality B. attitude . . . intelligence C. temperament . . . attitude D. emotionality . . intelligence

Answer: A. temperament . . . emotionality

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Answer:

A : temperament . . . emotionality

Explanation:

Nile crocodiles have Egyptian plover birds that’s feed on any parasites inside their mouth what is this relationship called

Answers

Answer:

Mutualism

Explanation:

Mutualism definition - describes the ecological interaction between two or more species where each species has a net benefit.

In the past 150 years, CO 2 emissions have risen by nearly 50%. What has dramatically increased during this time that has led to this increase in CO 2

Answers

Reliance on fossil fuels like coal, natural gas and oil has led to the increase in CO₂.

What is Fossil fuel?

These are hydrocarbons which are formed from plant and animal remains and are burned as fuel.

When burned they give out gases such as carbon dioxide due to its organic content which has led to its increase over the years.

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Neutrons are neutral. This means that
A.
neutrons are not involved in chemical reactions.
B.
neutrons do not have a charge.
C.
neutrons are neither acidic nor basic.
D.
neutrons do not have mass.

Answers

Answer:

The ansow is B: Netrons do not have a charge.

Answer:

its b

Explanation:

please answer fast! 69 points

Answers

Answer:

The answer is D

Explanation:

Renewable resources need to be protected

Answer:

Renewable resources need to be protected.

Explanation:

Many resources deplete if handled irresponsibly. Renewable resources will endure a lot longer if used correctly and effectively. People may reduce their waste and use natural resources effectively by practicing conservation.

What is the relationship between cells and tissues brainpop.

Answers

Answer:

Tissues are comprised of cells. Cells are comprised of tissue.

Explanation:

Please help quickly! It’s for my little bro

Answers

Answer:

I believe it is B.

the one you chose

Explanation:

The weathering that most likely played the largest role in creating the cliff was when water in the river broke down the rocks into smaller pieces, which is present in Option B.

What is the weathering process?

Rock cliffs can be formed by a variety of weathering processes. One common process is erosion caused by the movement of water as seen here as water flows through the mountains. Over time, these agents of erosion can wear away the softer layers of rock, leaving behind the harder layers that form the cliffs. Physical weathering is caused by the action of natural forces such as water, wind, etc. For example, water can flow into cracks in rock and then freeze and expand when the temperature drops, causing the rock to break apart. Wind can also erode rock surfaces over time by carrying small particles of sand and other debris that scrape and wear down the rock.

Hence, here the largest role in creating the cliff was when water in the river broke down the rocks into smaller pieces, which is present in Option B.

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15. A diploid cell is one that a. has two homologues of each chromosome. b. is designated by the symbol 2n. C. has chromosomes found in pairs. d. All of the above​

Answers

The answer is D because a diploid cell is one that has all sets of DNA.

Tmp/smx has two components that act on different steps in the folic acid biosynthesis pathway and are thus used together. sulfamethoxazole is a structural analog of a compound called paba, competing with it in the enzymatic production of dihydrofolic acid, an intermediate in the synthesis of folic acid. trimethoprim inhibits the step following dihydrofolic acid production and prevents the formation of the biologically active form of folic acid. choose true statements regarding tmp and smx.

Answers

Trimethoprim-sulfamethoxazole (TMP-SMX) are a class of antibiotics used in the treatment of bacterial infections due to their inhibitory actions in the folic acid biosynthesis pathway of bacteria.

What is TMP-SMX?

Trimethoprim-sulfamethoxazole (TMP-SMX), otherwise known as co-trimoxazole, is a combination of two antimicrobial agents that work synergistically to inhibit the enzyme systems involved in the bacterial synthesis of tetrahydrofolic acid.

They are used in the treatment of urinary tract infections, respiratory tract infections, cholera, etc.

They can be administered intravenously or orally.

Therefore, Trimethoprim-sulfamethoxazole (TMP-SMX) are antibiotics used in the treatment of bacterial infections.

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In what ways are the chemical reactions of photosynthesis and cellular respiration similar?.

Answers

Answer: Both produce energy.

Explanation: Both provide each other with the necessary ingredients for the process to take place: glucose and oxygen for cellular respiration, carbon dioxide and water for photosynthesis.

Scientists have noted a difference in the concentration of atmospheric gases available to Norway spruce trees at site 1 and site 2. Use Table 1 and Figure 2 to describe the difference in atmospheric gases at each site. Explain how the flow of matter and energy differs in these two locations as a result of the concentration difference. Use evidence from any of the tables or figures to support your answer

Answers

The concentration of gases in the atmosphere available to the Spruce trees depends in the number of trees in each location.

How do the amount of trees in an area affect concentration of atmospheric gases?

The atmosphere contains a mixture of gases such as carbon dioxide, water vapor, oxygen and nitrogen.

Plant such as trees are known to contribute to the amount of gases present in the atmosphere.

Trees remove carbon dioxide from the atmosphere and release oxygen into the atmosphere.

Therefore, the concentration of gases available tongue Spruce trees depends in the number of trees in each location.

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What does being in hardy-weinberg equilibrium mean for a population?.

Answers

The Hardy-Weinberg equilibrium is a principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.

The fibrocartilage pad between the medial condyle of the femur and the medial condyle of the tibia is called the __________.

Answers

Medial meniscus are fibrocartilage attached to the tibial collateral ligament, that is, between the medial condyle of the femur and the medial condyle of the tibia.

What is medial meniscus?

It is an articular fibrocartilage that extends medially across the knee joint, where it attaches to the tibia anterior to the insertion of the anterior cruciate ligament.

This in the middle zone has continuity with the deep portion of the medial ligament, being well attached to the tibia and femur and acting as a cushion and distributing the weight of the femur.

Therefore, we can conclude that the medial meniscus are fibrocartilage attached to the tibial collateral ligament, that is, between the medial condyle of the femur and the medial condyle of the tibia.

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WORTH 25 POINTS URGENT

Cutting down no more trees than can be regrown is known as _____
1- selective cutting
2- sustainable forestry
3- ecological forestry
4- clear-cutting

Answers

Answer:4- clear-cutting

I hope this helps you

:)

clear-cutting

hi :)

........................

To increase the absorption of nonheme iron in beans, you can eat a food with _____ alongside the beans

Answers

To increase the absorption of nonheme iron in beans, you can eat a portion of food with vitamin C alongside the beans.

What are vitamins?

Vitamins are certain micronutrients that may help to absorb other nutrients (e.g., minerals) in the body.

Vitamins are micronutrients that can be classified as fat-soluble vitamins and water (hydrophilic) soluble vitamins.

Vitamin C is required for the formation of blood vessels, muscle and cartilages in the body.

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