For instance, sea stars can basically regrow arms, arrow lizards can regrow their tails, and humans have the ability to regrow their livers to a certain extent. And these are examples of organisms undergoing regeneration. And now let's move on to the final type of asexual production known as parthenogenesis. So in humans, as well as other organisms, what happens is the sperm cell basically combines with the egg. And the sperm and the egg are both haploid with respect to their chromosome number. And when they combine, they form the diploid zygote.