"Formal genetics" should be as outmoded as the myth that the world is supported on the backs of whales and tortoises.
Two populations that don't mix is an example of what's know as the Wahlund effect.
S. Wahlund. Hereditas, 11:65-106, 1928
"Formal genetics" should be as outmoded as the myth that the world is supported on the backs of whales and tortoises. In art race, the tortoise sets his own pace.
A mermaid who was heterozygous for hair color (= Gg, green) and who had normal fingers (= ff, mermaids with recessive traits must be homozygous for the recessive allele) had a father with blue hair (= gg) and webbed fingers (= Ff, since daughter is homozygous for the recessive normal fingers allele f) and a mother with green hair (= Gg or GG) and webbed fingers (= Ff).
Cartoons on genetics are intended to teach us that not everything in nature has a function, and this requires a stretch of the imagination.