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3 years ago

Describe an environmental factor that could influence natural selection and decrease genetic diversity

Biology

2 answers:

pashok25 [27]3 years ago

6 0

Answer:

Usually, Populations have a genetic variation among individuals, which is important to the population's ability to survive in different situations that have an effect on the natural selection. There are different factors which can increase or decrease the genetic diversity, and influencing natural selection.

These factors include an environmental factor, one of the major factors, which may cause changes in the genetic variation of a population and influence the natural selection. A famous and important example of environmental factors affecting natural selection was during the Industrial Revolution, when many more grey moths made up the moth population.

This was so that they could blend in with the soot from factories to avoid predators.

Archy [21]3 years ago

4 0

Answer:

Availability of sunlight.

Explanation:

Some living organisms need a lot of sunlight to survive and cannot stand living in the shade, as is the case with some plants. In this case, the availability of sunlight presents itself as an environmental factor that will influence natural selection, because with less availability of sunlight, the less adapted organisms will die and the more adapted organisms will resist and pass this trait to their descendants.

Natural selection tends to decrease genetic variability because only a few genotypes will be selected. In addition, it also contributes to the permanence of a certain characteristic in the population.

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What occurs after transcription to produce the new protein molecule

kobusy [5.1K]

Protein synthesis occurs in cellular structures called ribosomes , found out-side the nucleus. The process by which genetic information is transferred from the nucleus to the ribosomes is calledtranscription. During transcription, a strand of ribonucleic acid (RNA) is synthesized.

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3 years ago

Jill has quite a menagerie of pets and she regularly has to deal with minor animal injuries. So when Johnnie, her rooster, spike

hoa [83]

Answer:

a.) Hydrogen peroxide are highly reactive oxygen compounds used as an antiseptic

b.) Used in treating punctured wounds due to the nature of the wound which helps microorganisms to thrive.

c.) Fizzing associated with hydrogen peroxide use is due to presence of the enzyme catalase.

Explanation:

Hydrogen peroxide is a chemical compound which is made up of two hydrogen atoms and two oxygen atoms. It is powerful oxidizing agent which takes part in biological reactions. This is possible as it can remove electrons from other biological molecules which can damage other cellular components. It is used an an antiseptic to reduce infection because, being a powerful oxidizing agent, it has the ability to react with cell wall of these microorganisms through removal of electrons thereby causing damage to it.

Punctured wounds are narrow in structure which allows obligate anaerobic organisms to thrive because of reduced oxygen flow in the wound. Hydrogen peroxide can effectively eliminate these organisms which are most likely to cause infection in that site because they lack the enzyme called catalase.

Catalase is an enzyme which is present in living cells except obligate anaerobic organisms. It converts hydrogen peroxide into water and oxygen. The fizzing noticed by Jill while cleaning the wound with hydrogen peroxide is due to the catalase in Jill's own cells which converts the hydrogen peroxide to water and oxygen. When oxygen is given off, fizzing reactions are seen at the surface of the wound.

6 0

2 years ago

Do sporozoans lack locomotor organs

Phoenix [80]

Yes, sporozoans lack locomotor organs

4 0

3 years ago

____________ is the movement of one object around another object.

olga nikolaevna [1]

An orbit is my best guess lol

6 0

3 years ago

The student is studying the movement of substances across the cell membrane. She understands that some substances combine with s

larisa86 [58]

Answer:

Facilitated diffusion

Explanation:

Facilitated diffusion is the transport of hydrophilic molecules that can not freely cross the membrane. Channel protein and many carrier proteins are in charge of this transport. When uncharged molecules cross the membrane, they do it according to their concentration gradients, going from the more concentrated side to the lower concentrated one. When ions need to cross the membrane, the process depends on an electrochemical gradient.

Facilitated diffusion is a passive transport process because they only depend on electrochemical gradients, so they do not need any energy to occur.

3 0

3 years ago