In addition, recent examples suggest modern humans have benefited by adaptive introgression from different populations and extinct species: introgressed Neanderthal alleles may have helped modern humans adapt to non-African environments .
As a result, a diverse set of statistical tests have been developed that utilize genome-wide data for the detection of introgression between closely related species.
The human heart is believed to grow by enlargement but not proliferation of cardiomyocytes (heart muscle cells) during postnatal development.
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