genetics, evolution of life & ecological biodiversity - Category wise Question and Answer Practice Test with Solutions

Question : 11

Sex-determination by environmental factors is commonly observed in

a) Melandrium album

b) Mirabills jalapa

c) Drosophila melanogaster

d) Bonellia viridis

Question : 12

Consider the following statements :

1. Test is used to determine an unknown genotype within one breeding generation.
2. Test cross is a cross between $F_1$ hybrid and dominant parent.
3. Test cross is a cross between $F_1$ hybrid and recessive parent.

a) 3 only

b) 2 only

c) 1 only

d) 1, 2 and 3

Question : 13

Which of the following is the X-linked genetic disease?

a) Martin-Bell syndrome

b) Daltonism or colour blindness

c) Duchenne’s muscular dystrophy

d) Both (a) and (b)

Question : 14

One of the following is a very unique feature of the mammalian body

a) Rib cage

b) Presence of diaphragm

c) Four chambered heart

d) Homeothermy

Question : 15

Consider the following statements :

1. The terms ‘gene’ and ‘allele’ were coined by Johansen.
2. Chromosomal theory of inheritance was given by Sutton and Boveri.
3. ‘One gene-one enzyme’ hypothesis was given by ‘Beadle and Tautum’.

a) 1 and 2

b) 2 and 3

c) 1, 2 and 3

d) None