genetic engineering and bio technology - Category wise Question and Answer Practice Test with Solutions

Question : 21 [UPPCS (Mains) 2008]

Biochip contains

a) RNA and DNA

b) RNA

c) DNA

d) RNA, DNA and Protein

Question : 22

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 : 23

Mutations can be induced with

a) ethylene

b) infrared radiations

c) I AA

d) gamma radiations

Question : 24 [BPSC (Pre) 1999]

Male’s gene constituent is

a) X

b) XX

c) XY

d) Y

Question : 25

The ratio of phenotypes in F2 of a monohybrid cross is

a) 9 : 3 : 3 : 1

b) 3 : 1

c) 1 : 2 : 1

d) 2 : 1