Thanks!
Does non random mating introduce variation into a population
What’s Telocentric and metacentric chromosomes?
It can both increase and decrease variation.
For example, when animals choose to mate with other animals who are similar to them, it decreases variation, but when the species tends to mate with others who are more different from them, then it leads to more variation.
( I'm pretty sure it's mostly decreasing variation though, because when like colourful male birds are more attractive to the females, after generations, most of the male birds then end up colourful because they are picked to mate with).
Edit: I might be wrong, I think it might only decrease genetic variation
Edit2: I just went to bed and started thinking about it, and non random mating would decrease variation, it wouldn't increase it. (correct me if I'm wrong anyone)
Telocentric chromosomes have their centromeres at the end of the chromosomes, metacentric chromosomes have the centromere at the centre of the chromosomes.