Evolution of sexual reproduction
The evolution of sexual reproduction describes how sexually reproducing eukaryotic organisms (animals, plants and fungi) evolved from a common ancestor that was a single celled eukaryotic species. Man...
5 Gross And Amazing Ways Animals Deliver Sperm
One worm lives inside the female and ejaculates through the top of her head. In some deep-sea anglerfish species, like the needlebeard seadevil, the tiny male bites into the female, who is often 10 ti...
Muller's ratchet
In evolutionary genetics, Muller's ratchet (named after Hermann Joseph Muller, by analogy with a ratchet effect) is the process by which the genomes of an asexual population accumulate deleterious mut...
Muller's ratchet - Wikipedia