The reduced fitness in hybrids arising from genetic incompatibility could have, overtime, led to the elimination of the Neanderthal Y alleles from the H. sapien gene pool. Concept introduction: Neanderthals and human beings share a common ancestor and both have said to have been occupied closer niches. During these periods, interspecific breeding might have occurred. As a result, current day European and Asian population have Neanderthal DNA in their autosomes. Neanderthals became extinct, but human beings survived.

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Chapter 26, Problem 3CT

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To explain: The reduced fitness in hybrids arising from genetic incompatibility could have, overtime, led to the elimination of the Neanderthal Y alleles from the H. sapien gene pool.

Concept introduction: Neanderthals and human beings share a common ancestor and both have said to have been occupied closer niches. During these periods, interspecific breeding might have occurred. As a result, current day European and Asian population have Neanderthal DNA in their autosomes. Neanderthals became extinct, but human beings survived.

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