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If a trait A exists in 10% of a population of an asexually reproducing species and a trait B exists in 60% of the same population,which trait is likely to have arisen earlier?
In asexual reproduction the reproducing cells produce a copy of their DNA  through some chemical reactions.However this copying of DNA is not accurate and the newly formed DNA has some variations.
It can be observed in the above figure that in asexual reproduction, very few variations are allowed. Therefore   if a trait is present  in only 10% of the population, it is more likely that the trait has arisen recently. Hence it can be concluded that trait B that exists in 60% of the same population had arisen earlier than trait A.


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