Tabitha M. Powledge has some details about the so-called three-parent baby, created in Mexico because the procedure is not approved in the U.S.: "Calling the result a three-parent baby is quite a stretch. A mitochondrion contains only 37 genes, compared with the nucleus’s 20,000 plus. So, as Rachel Feltman observes at Speaking of Science, the little boy might be said to have 2.001 parents." Also, why measles hasn't really been eliminated from the Western Hemisphere.
October 1, 2016
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