The Mystery of Genes

My twins look like a carbon copy of their Daddy...

D: Do I have more of Daddy than you?
Me: No, you have the same number of genes from Daddy as from me?
D: But I look more like Daddy...
Me: That's because Daddy's genes are stronger.
D: How do you make your genes stronger?
B: Do you exercise more?
Me: LOL ... No...
D: Do you put on jeans more often?
Me: LOL (in knots!)

Ops... I really haven't gone much into THIS part of Science yet...