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valentinak56 [21]
2 years ago
7

Explain the relationship between the environment, variation, and selection. Changing can cause certain traits to be favored thro

ugh . This can lead to changes in .
Biology
2 answers:
gavmur [86]2 years ago
8 0

Answer:

The relationship between environment, variation and selection lay the foundation for natural selection and evolution.

Genetic variations are present among species due to number of reasons like recombination or crossing over during meiosis, mutations, random fertilization etc. These factors bring changes among the members of a species. Some of the species become better adapted to survive in a particular environment whereas some are not better adapted and become extinct over a period of time. The environment selects the organisms that are best adapted to survive and hence lead to variations.

harkovskaia [24]2 years ago
8 0

Answer:

Explain the relationship between the environment, variation, and selection.

Changing ENVIRONMENTAL FACTORS  can cause certain traits to be favored through NATURAL SELECTION . This can lead to changes in GENETIC VARIATION .

Explanation:

just did the test :)

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Which of the following is not a function of protein?
masha68 [24]
C. Insulating the body

Insulating the body is not a function of a protein.

Lipids are macromolecules which provide insulation. 
<span>A macromolecule is a large molecule. There are four groups of macromolecules: carbohydrates, proteins, nucleic acids and lipids. Lipids consist of glycerol and fatty acids and are constructed from fats, oils, waxes, phospholipids and steroids. A lipid's function is to insulate the body and provide warmth in cold conditions. It can be concluded that a person with very little body fat gets very cold easily and a person with a lot of body fat gets very warm very quickly.
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8 0
2 years ago
Read 2 more answers
A fly has two alleles for the color of its eyes. The green allele is recessive, and is represented by q. The blue allele is domi
murzikaleks [220]

Answer:

p = 0.34

Explanation:

The green allele is recessive, meaning two copies of q (qq) are required to be green. Conversely, animals that are either pp or pq will be blue.

If 44 organisms are green, that means 44 are qq.

For genotype frequencies, the equation is:

homozygous dominant genotype + heterozygous + homozygous recessive = 100%

Which is denoted as

p² + 2pq + q² = 1

We know that q² = 44/100 = 0.44

To work out q, we can do \sqrt{0.44} = 0.66

For allele frequencies, the total must add up to 100%, so

p + q =1

We know that q= 0.66

So p = 0.34, because 0.66 + 0.34 = 1

7 0
2 years ago
Which of the following would be a result of eutrophication of a lake? undergrowth of water plants hypoxia, or low levels of oxyg
Travka [436]

Answer:

Undergrowth of water plants hypoxia

Low levels of oxygen.

Explanation:

Eutrophication occur when lake or river has adequate nutrients that will encourage the growth of water plants i.e algae which lead to the depletion of dissolved oxygen in the lake. The growth of algae is increased due to availability of carbondioxide or phosphorus or nutrients required for photosynthesis. This result in tainted drinking water,hypoxia and degradation of recreational activities.

9 0
2 years ago
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Ventricular systole begins during the __________ phase of the cardiac cycle. Ventricular systole begins during the __________ ph
Zina [86]

Answer

              Ventricular systole begins during the  <u>isovolumetric contraction </u>phase of the cardiac cycle.

Explanation

1. Ventricular ejection

The forceful expulsion of blood from the ventricles into the aorta and the pulmonary arteries.

2. Isovolumetric contraction

                     The interval between the closing of the AV valves and the opening of the semilunar valves (aortic and pulmonary valves) is known as isovolumetric contraction. it is the beginig of systole. it is the first chamber systolic event. The myocardial muscle fibers have begun to shorten but have not developed enough pressure in the ventricles to overcome the aortic and pulmonary end-diastolic pressures and open the aortic and pulmonary valves. During this period of muscle fiber contraction, the ventricular volumes do not change.

3. Ventricular filling  

                 In this stage AV valve is opened and the blood that has accumulated in atria flow rapidly into ventricles. The ventricular volume increase rapidly. A third heart sound known as S3 is heared during this stage.

4. Isovolumetric relaxation

                  It is the beginning of diastole. The AV valve are closed at beginig. The atrium in diastole has been filling with blood on top of the closed AV valve, causing atrial pressure to rise gradually. The pressure in the ventricles continues to drop. Ventricular volume is at a minimum and is ready to be filled again with blood.


5 0
2 years ago
Which nitrogen base sequence is the partner of T-C-A-G-C-A?
Lostsunrise [7]
A-G-T-C-G-T or in other words the answer is C
4 0
2 years ago
Read 2 more answers
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