ahlam1399
04-28-2016, 07:52 PM
Scientists identified two genetic variants that make it more likely that a woman will give birth to fraternal twins. K**wing this might help develop safer fertility treatments.
أكثر... (http://www.npr.org/sections/health-shots/2016/04/28/475905344/genetic-variations-help-make-fraternal-twins-more-likely?utm_medium=RSS&utm_campaign=news)
أكثر... (http://www.npr.org/sections/health-shots/2016/04/28/475905344/genetic-variations-help-make-fraternal-twins-more-likely?utm_medium=RSS&utm_campaign=news)