A very interesting story appeared in New Scientist recently regarding the domestication of dogs. We’re going to take a look at that story today, as well as the broader topic of animal domestication as that is something we’ve never touched on before and it had tangential bearing on the flood and its aftermath. With all that in mind, let’s look at what New Scientist tells us.
Category: The Science
Inbreeding Depression
Inbreeding depression is a very strong danger to small populations. As relatives with
similar DNA interbreed, more and more deleterious mutations begin to be expressed,
effectively crippling the population, and often driving it to extinction. However, small
populations are often unable to avoid inbreeding, meaning other mechanisms must be
employed to counter its destructive effect.
Maintenance of Deleterious Alleles
Deleterious alleles are, by definition, not beneficial and should be selected out. However, sometimes deleterious alleles are maintained in a population, despite their harmful effects. Scientists have proposed several explanations for this unintuitive quirk of biology. Overdominance, otherwise known as heterozygote advantage, and mutation-selection balance are two such explanations.
Best Evidences for Evolution?
I was asked to provide the best evidences I could think of for evolution and debunk them. So here are some of the best evidences for evolution and why they are wrong.
