Sperm the movie

Description:Download powerpoint Our understanding of the mechanics of sexual selection has come a long way since and Darwin's second-most-famous book The Descent of Man, and Selection in Relation to Sex. At that time, the focus remained within the bounds of relatively polite pre-mating activities such as courtship rituals or duels between amorous males. However, since the s researchers' eyes have been firmly drawn towards the intimate post-copulatory processes that occur inside the female body during and after mating. While our understanding of how male gametes compete in the race to fertilise eggs has advanced steadily, our understanding of the female's role in sperm selection, termed cryptic female choice, is less clear. One major barrier is that these cryptic choices happen inside the female body and are difficult to discern with any clarity. Now, in a paper published in Science, Scott Pitnick and his colleagues describe an extraordinary way of viewing internal processes, as they are played out within the female tract.

Views: 7596 Date: 2018-03-13 Favorited: 75