DNA and Evolution [Subject SAT (College Board) Biology]: Questions 76 - 79 of 134

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Question 76

DNA and Evolution
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Question

MCQ▾

The frequency of A allele is 0.6 and that of a is 0.4 at any particular locus. What would be the frequency of heterozygote’s in a random mating population at equilibrium?

Choices

Choice (5)Response

a.

0.48

b.

0.24

c.

0.16

d.

0.36

e.

None of the above

Question 77

DNA and Evolution
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Question

MCQ▾

Which of the following is indispensable for proofreading by DNA polymerase III while the process of DNA replication?

Choices

Choice (5)Response

a.

5’ to 3’ endonuclease activity

b.

3’ to 5’ exonuclease activity

c.

5’ to 3’ exonuclease activity

d.

3’ to 5’ endonuclease activity

e.

All of the above

Question 78

DNA and Evolution
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Question

MCQ▾

In mammalian heart developmental history, it is pragmatic that it passes through a two chambered fish like heart, three chambered frog like heart and finally four chambered stage. Based on which hypothesis the above theory can be justified?

Choices

Choice (5)Response

a.

Biogenetic law

b.

Mendalian principles

c.

Hardy Weinberg law

d.

Lamarck’s principle

e.

None of the above

Question 79

DNA and Evolution
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Question

MCQ▾

Eukaryotes has diverge mode of replication than in prokaryotes owing to

Choices

Choice (5)Response

a.

Discontinuous rather than semi-discontinuous replication

b.

Use of DNA primer rather than RNA primer

c.

Different enzyme for synthesis of lagging and leading strand

d.

Unidirectional rather than semi-discontinuous replication

e.

Question does not provide sufficient data or is vague