Genetics and Evolution-Molecular Basis of Inheritance (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology): Questions 1 - 6 of 85

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Question number: 1

» Genetics and Evolution » Molecular Basis of Inheritance » Gene Expression and Regulation

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MCQ▾

Question

Operon is

Choices

Choice (4) Response

a.

A set of closely linked genes regulating metabolic pathways in prokaryotes.

b.

The sequence of three nitrogen bases determining a single amino acid.

c.

The sequence of nitrogen bases in mRNA which codes for a single amino acid.

d.

A segment of DNA specifying one polypeptide chain in protein synthesis.

Question number: 2

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

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MCQ▾

Question

Which of the following is a base analogue?

Choices

Choice (4) Response

a.

Colchicine

b.

Caffeine

c.

Nitrous acid

d.

5 – bromouracil

Question number: 3

» Genetics and Evolution » Molecular Basis of Inheritance » Gene Expression and Regulation

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MCQ▾

Question

Which of the following is genetically inert and does not transcribe messenger RNA for protein synthesis?

Choices

Choice (4) Response

a.

DNA of heterochromatin

b.

DNA of euchromatin and heterochromatin

c.

DNA of euchromatin

d.

All of the above

Question number: 4

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

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MCQ▾

Question

Which form of RNA has a structure resembling clover leaf?

Choices

Choice (4) Response

a.

hn RNA

b.

t RNA

c.

r RNA

d.

m RNA

Question number: 5

» Genetics and Evolution » Molecular Basis of Inheritance » Transcription

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MCQ▾

Question

Okazaki fragments are joined in correct sequence by

Choices

Choice (4) Response

a.

DNA polymerase

b.

Primase

c.

RNA polymerase

d.

DNA ligase

Question number: 6

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

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MCQ▾

Question

Eukaryotes differ from prokaryotes in the mechanism of DNA replication due to

Choices

Choice (4) Response

a.

Use of DNA primers rather than RNA primers.

b.

Discontinuous rather than semi-discontinuous replication.

c.

Different enzymes (instead of same enzyme) for synthesis of lagging and leading strands.

d.

Unidirectional rather than bidirectional replication.

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