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Class-XII. Chapter-6, Molecular basis of inheritance

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

1. The two polynucleotide chains in DNA are

a)

Discontinuous

b)

Antiparalllel

c)

Semi conservative

d)

Parallel

2.

The codon AUG is

a)

Ochre

b)

Amber

c)

Initiation codon

d)

Termination codon

3.

During the replication of DNA, the synthesis of DNA as lagging strand takes place in segment, these segments are called

a)

Double helix segments

b)

Satellite segments

c)

Kornberg segments

d)

Okazaki segments

4.

Meselson and Stahl experiment proved

a)

DNA is genetic material

b)

Central Dogma

c)

Transformation

d)

Semi Conservative DNA replication

5.

The basis of DNA fingerprinting is

a)

Double helix

b)

Errorrs in base sequence

c)

Polymorphism in sequence

d)

DNA replication

6.

Which of the following be named for DNA produced from RNA

a)

A-DNA

b)

B-DNA

c)

C-DNA

d)

Z-DNA

7.

The number of stop codons which do not code for any amino acid is

a)

1

b)

2

c)

3

d)

4

8.

DNA sequences that code for protein are known as

a)

Intron

b)

Exon

c)

Control Regions

d)

Intervening Sequences

9.

Removal of introns and joining of exons in a defined order in a transcription unit is called

a)

Tailing

b)

Transformation

c)

Capping

d)

Splicing

10.

In lac operon the i gene codes for

a)

Inducer of lac operon

b)

Repressor of lac operon

c)

Hydrolysis of Disaccharide

d)

Permease