set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Biochip contains

a) RNA and DNA

b) RNA

c) DNA

d) RNA, DNA and Protein

Question : 2

Sickle cell anaemia is

a) characterized by elongated sickle like RBCs with a nucleus.

b) caused by substitution of valine by glutamic acid in the beta globin chain of haemoglobin.

c) caused by a change in a single base pair of DNA.

d) an autosomal linked dominant trait.

Question : 3

Mutations can be induced with

a) ethylene

b) infrared radiations

c) I AA

d) gamma radiations

Question : 4

Assertion (A):
In human being, the females play a major role in determining the sex of the offspring.
Reason (R):
Women have two ‘X’ chromosomes.
Code

a) (A) is true, but (R) is false

b) Both (A) and (R) are true and (R) is the correct explanation of (A)

c) Both (A) and (R) are true, but (R) is not the correct explanation of (A)

d) (A) is false, but (R) is true

Question : 5

The enzyme used for joining two DNA fragments is called

a) DNA polymerase

b) ligase

c) restriction endonuclease

d) gyrase

Question : 6

Indian farmers are unsatisfied with terminator seed technology because it increases the possibility of

a) Growing sterile plants (sexually)

b) Appearance of bad germination

c) Making little yield inspite of high quality plants

d) Growing of plants which one not capable of producing germinable seeds