Couples are more likely to have baby boys than girls when they have sex at this time of the month
There’s no way to guarantee you’ll conceive a baby boy — short of implanting a male embryo created through in vitro ...
PBS13y
Week 6 (later)—Male
A crucial event that determines whether the embryo will develop into a male or female occurs in the second half of week six. If the Y chromosome is present in the embryo's cells, a gene within the ...
In these 6 animals, it’s actually the male that gives birth to a young one!
Male pregnancy evolved in these species to increase reproductive success. By shifting gestation to males, females can produce ...
Cells That Build Themselves Into an Embryo? Scientists Just Made It Happen
Scientists have found a way to study early embryonic development without real embryos. Using CRISPR, they programmed stem cells to self-organize into structures mimicking early embryos. The cells show ...
WebMD1y
Is the Environment Male-Friendly?
"We've assumed that the placental barrier will protect the developing male embryo. We have not paid enough attention to the way that these chemicals can control development even in very low doses ...