Consider a multi-cellular, sexually reproducing organism. Comparing the followin

Question

Consider a multi-cellular, sexually reproducing organism. Comparing the following pair of phenomena, which is most likely to be associated with evolutionary change in a population and (briefly) why? "Variation in a vestigial trait vs. variation in a trait that influences reproductive success" Consider a multi-cellular, sexually reproducing organism. Comparing the following pair of phenomena, which is most likely to be associated with evolutionary change in a population and (briefly) why? "Variation in a vestigial trait vs. variation in a trait that influences reproductive success"

Explanation / Answer

Vestigial traits are those that are inherited from the ancestor, which probably loss their functional ability in the descendants. Variation in these traits is not typically associated with the evolutionary change.

However, the variation in reproductive success is associated with the evolutionary change because the natural selection always favours the success of sexual reproduction and survival of an organism. So, a variation in a trait that influences reproductive success is associated with the evolutionary change in population.

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