Question

Which of the following statements is not true with respect to variation?

Options

• All variations in a species have equal chance of survival

• Change in genetic composition results in variation

• Selection of variants by environmental factors forms the basis of evolutionary processes.

• Variation is minimum in asexual reproduction

Answer 1

All variations in a species have equal chance of survival

Explanation - 

Variations are produced due to inaccuracy in DNA copying mechanisms and sexual reproduction. All variations in a species do not confer equal survival advantages. So, the statement given as option (a) is not true for variation.