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Question

Question 10
New species may be formed if

(i) DNA undergoes significant changes in germ cells.
(ii) Chromosome number changes in the gamete.
(iii) There is no change in the genetic material.
(iv) Mating does not take place.

(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii), (iii) and (iv)
(d) (i), (ii) and (iii)


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Solution

(a) (i) and (ii)

Speciation is the evolutionary process by which new biological species arise. Speciation involves changes in chromosome number and/or molecular changes in DNA of an embryo which is a more common phenomenon.


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