A new evolutionary theory explains how critically small populations of early humans survived, despite an increased chance of hereditary disabilities being passed to offspring. Read more at: http://phys.org/news/2015-06-vulnerability-human-early-ancestors-disability.html#jCp

A new evolutionary theory explains how critically small populations of early humans survived, despite an increased chance of hereditary disabilities being passed to offspring.

Read more at: http://phys.org/news/2015-06-vulnerability-human-early-ancestors-disability.html#jCp
http://phys.org/news/2015-06-vulnerability-human-early-ancestors-disability.html