Mutations can also be beneficial. I wonder if other traits, such as intelligence variability, are also related to father age? There's even a nice evolutionary

Mutations can also be beneficial. I wonder if other traits, such as intelligence variability, are also related to father age? There's even a nice evolutionary coincidence: if you wanted to play with genes to make something, it's a good idea to start with the genes of older fathers, because they've shown they can survive longer.