combinations will be expressed in each cousin. My dad taught high school biology for 30 years and we just talked about it. *He humbly suggested that he’s not a genetic expert and to not use him as a reference (lol but here I am)

Obviously, DNA and genes are much more complicated than simple 2 x 2 tables but it’s helpful to picture that if one parent has a dominant and recessive gene and the other has two recessive genes then there’s a 50/50 chance each cousin would have the same gene combination for that particular trait.

The stuff is actually pretty interesting. My relatively uneducated guess is that these cousins would show more DNA in common than average cousins but less than siblings