The latest older the fresh new parents, a lot more likely ladies jizz are to fertilize brand new eggs
This could be due to hormonal alterations regarding the girl due to the fact she many years. And older males produce a lot fewer male sperm.
A review of thirteen training found that 55 % away from children created to girls that has had serious day problems had been lady. (more…)
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The latest older the fresh new parents, a lot more likely ladies jizz are to fertilize brand new eggs