Subject SAT (College Board) Biology: Questions 671 - 675 of 805

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Question number: 671

» Mendel and Hereditary

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MCQ▾

Question

Crossing over in diploid organism is responsible for

Choices

Choice (4) Response

a.

recombination of linked alleles

b.

linkage between genes.

c.

segregation of alleles

d.

dominance of genes

Question number: 672

» DNA and Evolution

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MCQ▾

Question

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 (4) Response

a.

0.48

b.

0.24

c.

0.16

d.

0.36

Question number: 673

» DNA and Evolution

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MCQ▾

Question

The mutation takes place at an accidental base within the genome.

Choices

Choice (4) Response

a.

True

b.

False

c.

Question does not provide sufficient data or is vague

d.

None of the above

Question number: 674

» DNA and Evolution

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MCQ▾

Question

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

Choices

Choice (4) 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

Question number: 675

» DNA and Evolution

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MCQ▾

Question

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 (4) Response

a.

Biogenetic law

b.

Mendalian principles

c.

Hardy Weinberg law

d.

Lamarck’s principle

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