What happened to Drosophila Melanogaster or Mendel’s peas?
Peas just don’t hold the interest for todays young’uns.
You’re a real punnett square, aren’t you?
They don't have blood types.
This is, in my opinion, a legitimate test question about the genetics of human blood types.
Further, I'd also go so far as to say that the question strongly implies ("Ursula has sex to get revenge...") that the girl's behavior is to be condemned.
The father should stop clutching his pearls.
Regards,