Respuestas al mensaje #12,951

The study, such as it is, is proposing that the two sex chromosomes contributed by each parent choose each other, rather than the father's X or Y...

I don't think you're considering the possibility that the egg might have a 4-dimensional energy field capable of preventing Y sperms from...

Read the Abstract and the study Apparently there are ancestral chromosomes and then parental chromosomes. They discovered that as the zygote is...