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The following question based on genetics, evolution of life & ecological biodiversity topic of general science mcq

Questions : Consider the following statements :
  1. Allosomes, are chromosome which are responsible for determination of sex, e.g., X and Y-chromosomes.
  2. Autosomes, are chromosomes, which determine the somatic characters.
Which of the statement(s) given above is/are true?

(a) 1 and 2

(b) 2 only

(c) 1 only

(d) None

The correct answers to the above question in:

Answer: (a)

Autosomes determine somatic characters and are present in humans as 21 pairs while sex chromosomes or allosomes are X and Y chromosomes are present as 2 pairs.

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Read more genetics evolution of life and ecological biodiversity Based General Science Questions and Answers

Question : 1

Fossils are

a) Remains of plants and animals that are still surviving

b) Remains of deadly plants and animals that are extinct

c) Both (a) & (b) 

d) None of the above

Answer: (c)

Question : 2

What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors?

a) Increasing cranial capacity

b) Shortening of jaws

c) Binocular vision

d) Upright posture.

Answer: (a)

Question : 3

Which of the following does not contain chlorophyll?

a) Bryophyta

b) Fungi

c) Algae

d) Pteridophyta

Answer: (b)

Question : 4

In case of incomplete dominance the monohybrid ratio of phenotypes in F2 generation is

a) 3 : 1 : 1

b) 9 : 3 : 3 : 1

c) 1 : 2 : 1

d) 2 : 3 : 1

Answer: (c)

Question : 5

Which of the following group of animals maintains high and constant body temperature such as mammals ?

a) Birds

b) Reptiles

c) Amphibians

d) Fishes

Answer: (a)

Animals which maintain high and constant body temperature are called warm blooded animals. They are also called homeothermic animals. Birds are the first vertebrate to have warm blood. They are homeothermous.

Question : 6

Modern man evolved from

a) Neanderthal man

b) Java man

c) Peking man

d) cro-magnon man

Answer: (d)

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