question about diabetes and heredity?

[indeed.]

i am assuming that diabetes is recessive, but.. is my punnet scale wrong? according to my punnet scale, if a normal male ( XNY) marries a female with diabetes [heterozygous] (XnXn) then their male offspring all have to have diabetes. (XnY). Because on the scale, XN+Xn= XNXn (carrier female), Y+Xn= XnY (heterozygous male), and those are the only outcomes. so is it true that the male offspring have a 100% chance of getting diabetes, or was my punnet scale wrong? (no mean answers please)

[Mr. Peachy®]

If you're referring to type two diabetes, it doesn't work that way. The genetic component is no more than a predisposition. There are several other factors as well. Diet/nutrient level, weight, activity level, cellular permeability (or lack of), etc., etc. There are too many exceptions to simply go by genetics.

Cute doggie!

[Paul]

My understanding is that there is more than 1 genetic factor necessary to cause type 1 diabetes. With type 2 it is much easier, all you need to do is spend you life eating much more than you burn until either age of weight puts you over the top.