Question

Which of the following is true about variations?

• A. Every cell division may cause variations
• B. In sexual reproduction, variations of two individual combine to form even more variations
• C. Variations among individuals give a species a better chance of survival
• D. Variations occur only in sexual mode of reproduction.

Answer 1

Answer: (A), (B), (C)

The correct options are
A Every cell division may cause variations
B In sexual reproduction, variations of two individual combine to form even more variations
C Variations among individuals give a species a better chance of survival

Any cell division may give rise to variations among daughter cells. In sexual reproduction, the variations of two individuals come together because of fusion of gametes. More variation gives a group of individuals an advantage in adapting to an environment which may be changing. Hence, sexual reproduction is more advantageous than asexual reproduction. In some cases, mutations can happen, leading to variations in asexual reproduction, due to environmental variations.