Showing posts with label Bird Eggs. Show all posts
Showing posts with label Bird Eggs. Show all posts

Wednesday, November 4, 2015

Bird Eggs Need Extra Sperm To Make Chicks


You know the story of mammalian fertilization: millions of sperm enter the vagina, only one fertilizes the egg, more than one messes up the embryo, yadda yadda yadda. Turns out that’s not the only way it can work.Birds, for example, always have multiple sperm penetrating each egg. Only one of tho...


http://flip.it/R55RA