What Evidence Supports the Hypothesis That Humans Originated in Africa

Question

What evidence supports the hypothesis that humans originated in Africa?
A)H.sapiens genomes contain some alleles from Neanderthal genomes.
B)One Y chromosome lineage is that originated 1,000 years ago is found in 8% of modern day Asian men.
C)Alleles of nuclear genes are less variable in African populations than in other populations.
D)Mitochondrial DNA sequence variation is higher in African populations than in other populations.

Accepted Answer

Mitochondrial DNA sequence variation is higher in African populations than in other populations, indicating a longer period of genetic diversification within Africa. This supports the hypothesis that humans originated in Africa, as populations that have been in a region longer tend to have greater genetic diversity due to more time for mutations to accumulate.