A) duplication of chromosomes during mitosis
B) mutations
C) crossing over during meiosis
D) both (a) and (b)
Correct Answer: D
Solution :
Variations are differences in morphological, physiological cytological and behavioural characteristic shown by the individuals of the same species, race and family. The variations are due to crossing over, mutation or due to environmental effect.You need to login to perform this action.
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