New species may be formed if: (A) DNA undergoes a significant ch
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New species may be formed if:
(A) DNA undergoes a significant change in the germ cell.
(B) Chromosomes number change in the gamete.
(C) There is no change in genetic materials
A. Only (A)
B. (A) and (B)
C. (A) and (C)
D. (A), (B) and (C)
Please scroll down to see the correct answer and solution guide.
Right Answer is: B
SOLUTION
The correct answer is (A) and (B).
- New species are formed due to
- Geographical isolation,
- Genetic drift,
- Variation so variation is due to change in chromosome number. Hence statement (A) is correct.
- Change of DNA in germ cell and due to change in genetic material. Hence statement (B) is correct.
- Evolution will not take place without change and variation the genetic material.
- Hence, the change in genetic material and variation in a chromosome is required for the evolution of new species.
