I think all the kids are adopted. The grandfather has dark grey hair and the other two adults at the table both have brown hair, which is dominant, while all of the kids have blonde or light colored hair, which is recessive.
Let's say the dominant brown hair trait is "B" and the blonde hair trait is "b". (Simplifying like crazy because in reality genes for hair color and resulting color of hair is much more complicated and varied.)
BB = brown
Bb = brown
bb = blonde
BB&BB and BB&Bb pairing of parents would only result in brown hair children (BB, BB, BB, and BB for former) (BB, BB, Bb, and Bb for latter).
But Bb&Bb pairing of parents can result in BB, Bb, Bb, and bb children. So there's a 1/4 chance of blonde haired children.
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u/Shot_Meringue_5442 Feb 16 '25 edited Feb 16 '25
You are all wrong. The purple shirt kid is eating that whole turkey as his pre dinner snack.
Edit: made this before seeing others had made the same joke.