Q17) Which of the following statements is not true with respect to variation? (a) All variations in a species have equal chances of survival. (b) Change in genetic composition results in invariation. (c) Selection of variants by environmental factors forms the basis of evolutionary processes. (d) Variation is minimum in in asexual reproduction
Solution: Since only useful variation has a chance of surviving, statement a) is incorrect. To survive, nature selects the most adaptable variant. This is Darwin's theory of Natural selection. So, the correct answer is (a) All variations in a species have an equal chance of survival
