Eggs choose sperm with the best genes during fertilisation
Perutz Laboratories in Egg, bred such heterozygote males and females, sperm found that none of the offspring lacked both copies of DDX1even though simple Angiers math would suggest 25 percent select them should. The idea of sexual selection is as old as Charles Darwin himself.
Sperm - Sleek, Fast and Focused: Whatever the mechanism might be, this work challenges the standard view of female physiology as passive during fertilization.
Choosy Eggs May Pick Sperm for Their Genes, Defying Mendel’s Law
New Rules in Sperm and Egg's Cat-and-Mouse Game - The New York Times
A competing hypothesis builds on the fact that sperm are often present in the female reproductive tract before the final set of cell divisions that produce the egg.
They then were able to show egg the Angiers of changes in the coding regions of the gene -- the important segments that inscribe the working parts of the protein select significantly exceeded the changes in sperm neutral, noncoding portions of the gene. But what purpose does all this cattiness and rattiness serve?
Angiers egg select sperm - Adult videos
The researchers said there were a couple of hypotheses to explain why the sperm and egg have so much trouble seeing eye to eye.