资讯
For a long time, having children has been a young person’s game. Although ancient records are sparse, researchers estimate that, for most of human history, women most typically conceived their ...
One species even shows the typical human pattern — all young colony females are reproductively active and then progress to a post-reproductive worker stage as they age 13.
Analyzing embryo movements in uteruslike environments could offer clues to improving the success rate of in vitro ...
MHR publishes articles on the basic science of human reproductive physiology and pathology, endocrinology, andrology, gonadal function, gametogenesis, fertilization, embryo development ...
Scientists recorded in 3D and in real time the exact moment a human embryo implanted itself in an artificial uterus, opening ...
The following is an excerpt from The End of Sex and the Future of Human Reproduction by Henry T. Greely. This is a book about the future of our species, about the likely development of revolutionary ...
Human reproduction Human reproduction is any form of sexual reproduction resulting in the conception of a child, typically involving sexual intercourse between a man and a woman.
Indeed, the book is full of pertinent facts, figures, anecdotes, and analysis about human evolution, expertly woven together to inform current issues, including birth control, enhanced reproductive ...
The reproductive systems allow human reproduction. Find out more with BBC Bitesize. For students between the ages of 11 and 14.
一些您可能无法访问的结果已被隐去。
显示无法访问的结果