Genetics and Evolution (NEET Biology): Questions 29 - 34 of 154

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Question number: 29

» Genetics and Evolution » Molecular Basis of Inheritance » Structure of DNA and RNA

MCQ▾

Question

Adenine is 30 % then what would be the % of guanine?

Choices

Choice (4) Response

a.

20%

b.

10%

c.

30%

d.

40%

Question number: 30

» Genetics and Evolution » Heredity and Variation » Chromosomes and Genes

MCQ▾

Question

Gene mutation is caused by

Choices

Choice (4) Response

a.

Change in the sequence of genes in DNA.

b.

Reproduction.

c.

Change in the sequence of nitrogenous base.

d.

Linkage.

Question number: 31

» Genetics and Evolution » Evolution » Human Evolution

MCQ▾

Question

Polydactyly in man is due to

Choices

Choice (4) Response

a.

Sex-linked dominant gene.

b.

Autosomal recessive gene.

c.

Sex-linked recessive gene.

d.

Autosomal dominant gene.

Question number: 32

» Genetics and Evolution » Heredity and Variation » Down's Syndrome, Turner's and Klinefelter's Syndromes

MCQ▾

Question

An abnormal male child is born to normal parents. This child shows a short neck, stubby hands, slanting eyes, permanently open mouth with projection upper lip and short stature. This abnormality can be attributed to

Choices

Choice (4) Response

a.

An extra chromosome in the 21st pair of autosomes

b.

An extra X chromosome

c.

Absence of X chromosome leading to a total of 45 chromosomes instead of the normal 46.

d.

An extra Y chromosome

Question number: 33

» Genetics and Evolution » Molecular Basis of Inheritance » DNA Replication

MCQ▾

Question

Semiconservative model of DNA replication was proposed by which workers in eukayotes?

Choices

Choice (4) Response

a.

Messelson and Stahl

b.

Taylor, Woods and Huges

c.

Watson and Crick

d.

Nirenberg and Khorana

Question number: 34

» Genetics and Evolution » Molecular Basis of Inheritance » DNA as Genetic Material

MCQ▾

Question

Which one of the following ratio is constant in DNAs of different species?

Choices

Choice (4) Response

a.

A + U/C + G

b.

A + T/C + G

c.

A + G/T + C

d.

A + C/U + G

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