When your contractor has the drawings upside down
The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it.
– GNU Sir Terry Pratchett
The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it.
– GNU Sir Terry Pratchett
When your contractor has the drawings upside down
blogs.iu.edu/sciu/…/the-longest-sperm-on-earth/
Apparently the female seminal receptacle is also very long. In fact, the increasing length of this receptacle is one of the explanations for the extreme sperm length.
Drosophila females have evolved to fertilize their eggs with particularly long sperm. Only large, healthy males are able to produce large quantities of gigantic sperm, and if a female reproduces with healthy males, her offspring will have genes that make them healthy, too.
The drive to reproduce has led to many of the flashiest traits observed in nature. For instance, male deer use antlers to fight one another for access to female mates, while male peacocks display their extravagant tails to impress peahens. These are examples of sexually selected traits, or traits that increase reproductive success. Sexually selected traits evolve because they increase “fitness”...