[Jacob-list] ram ratios

[Betty Berlenbach]

Steph and Gary,

On the other hand, I believe that Orthodox Jews sire more males than females, which I have read is because of their sexual purity laws, is due to the fact that they cannot have sex with their wives until a week after their menses, which means generally the day of ovulation.  My understanding is that the male sperm swim faster, the female last longer, so WHEN the coitus occurs might well effect gender of progeny.  Don't know if that is true with rams as well as humjans.
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