Genetics and Evolution-Molecular Basis of Inheritance [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Biology]: Questions 12 - 17 of 125

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Question 12

Question MCQ▾

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

Choices

Choice (4)Response

a.

Taylor, Woods and Huges

b.

Watson and Crick

c.

Nirenberg and Khorana

d.

Messelson and Stahl

Edit

Question 13

Question MCQ▾

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

Choices

Choice (4)Response

a.

A + G/T + C

b.

A + U/C + G

c.

A + C/U + G

d.

A + T/C + G

Edit

Question 14

Question MCQ▾

Feulgen reaction is a special test for

Choices

Choice (4)Response

a.

RNA

b.

DNA

c.

Carbohydrate

d.

Protein

Edit

Question 15

Question MCQ▾

The most striking example of point mutation is found in a disease called

Choices

Choice (4)Response

a.

Thalassemia

b.

Sickle-cell anaemia

c.

Night blindness

d.

Down՚s syndrome

Edit

Question 16

Question MCQ▾

Which one of the following pair is correctly matched?

Choices

Choice (4)Response

a.

George Beadle – Proposed the concept of inborn errors

b.

Francis Crick – Proposed one gene one polypeptide hypothesis

c.

Linus Pauling – Isolated the DNA for the first time.

d.

Frederick Griffith – Discovered the phenomenon of transformation

Edit

Question 17

Question MCQ▾

At which site of a t-RNA molecular hydrogen bonds to a m-RNA molecule?

Choices

Choice (4)Response

a.

Codon

b.

3′ end of the t-RNA molecule

c.

Anticodon

d.

5′ end of the t-RNA molecule

Edit