set 5 MCQ Questions & Answers Detailed Explanation

Question : 1

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 : 2

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 : 3

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

Question : 4

Sex-determination by environmental factors is commonly observed in

a) Melandrium album

b) Mirabills jalapa

c) Drosophila melanogaster

d) Bonellia viridis

Question : 5

In terms of the evolution of organisms, which one among the following is the most advanced?

a) Shark

b) Bat

c) Pigeon

d) Vulture

Question : 6

Polar bears are carnivores and prey on many arctic birds and fishes. However, under natural conditions, no one found polar bears predating any penguin. This is because

a) polar bears and penguins never coexist under natural conditions. The former lives in the North Pole while the latter lives in the South Pole

b) penguins have chemical substance in their muscles which is toxic to polar bears

c) penguins are gregarious and always move in groups. Therefore, a polar bear cannot approach them

d) None of these