Question

Arrange the following in the sequence according to Darwin

(a) mutation

(b) reproductive isolation

(c) natural selection

(d) evolution

• A. a, b, c, d,
• B. d, c, b, a,
• C. a, c, b, d,
• D. c, b, a, d,

Answer 1

The correct option is A

a, b, c, d,

The correct option is A.

Explanation of correct option:

1. Mutation: Suddenly a change in the gene that leads to a heredity change called a mutation.
2. Reproductive isolation refers to the mechanisms which check the populations of two different groups from interbreeding.
3. Reproductive isolation occurs between individuals of these two groups.
4. As a result, they are unable to reproduce even if they happen to meet somehow.
5. These two groups then transform into new species.
6. Natural selection: Natural selection is the phenomenon wherein nature, in the wild, selects traits favourable to the species in its environment.
7. Evolution: Evolution is the sequence of gradual changes which take place in the primitive organisms over millions of years in which new species are produced.

Explanation of incorrect option:

Option B:

The sequence according to Darwin is a mutation, reproductive isolation, natural selection, and evolution ( a, b, c, d). so option B is incorrect.

Option C:

The sequence according to Darwin is a mutation, reproductive isolation, natural selection, and evolution ( a, b, c, d). so option C is incorrect.

Option D:

The sequence according to Darwin is a mutation, reproductive isolation, natural selection, and evolution ( a, b, c, d). so option d is incorrect.

Final answer: The sequence according to Darwin is a mutation, reproductive isolation, natural selection, and evolution ( a, b, c, d).