Originally Posted by
atomic sagebrush
just to clarify before I start getting messages, the original poster misread the study and it's NOT the egg that chooses, it was conditions in the Fallopian tubes. (which fits in with what we are doing around here)
Yes popple that is just exactly what we believe is going on here. But you have it a little bit backwards, girl PREGNANCIES (NOT X sperm but XX babies) are hardier and do better in tougher conditions than boy pregnancies (not Y sperm but XY babies). The sperm themselves seem to be less of a factor than the old school sway stuff would have everyone believe.