Genetics and Evolution (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology): Questions 1 - 6 of 186

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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 » Heredity and Variation » Mendelian Inheritance

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MCQ▾

Question

If an offspring shows any one of the characters of either of parents, the

Choices

Choice (4) Response

a.

Offspring is hereditary.

b.

The character is related with cytoplasm.

c.

Character is said to be hereditary.

d.

Question does not provide sufficient data or is vague

Question number: 4

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

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MCQ▾

Question

The monosomic condition in human beings depicted as XO is referred to as

Choices

Choice (4) Response

a.

Criminal syndrome

b.

Down’s syndrome

c.

Turner’s syndrome

d.

Klinefelter’s syndrome

Question number: 5

» 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: 6

» Genetics and Evolution » Heredity and Variation » Mendelian Inheritance

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MCQ▾

Question

Organisms phenotypically similar but genotypically different are said to be

Choices

Choice (4) Response

a.

Monozygous

b.

Homozygous

c.

Heterozygous

d.

Multizygous

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