Baby Daddy 2 9, 4:31am

'@Permutator' name one option currently available that can eliminate haemophilia instead of treating symptoms. I'll wait.
"Emphasizing the importance of genetic relations" is another way of saying "discouraging cheating in monogamous relationship". Presumably, wife selects husband because he demonstrated a number of desirable traits during courtship and vice versa.
Careful selection of partner isn't something that one-night stands are known for.