Question

In humans, thick eyebrows are dominant to narrow and separated are dominant to joined. Michael has a very thick unibrow, and is worried his future children will as well. He is surprised he even has one, since his mother has narrow and separated eyebrows, just like his wife Alexia. Alexia's dad has a unibrow.

Answer 1

The mother is a carrier of the genes to make a thick unibrow. Two of Michael's children will have thick unibrows if he has children with someone with thin, separated eyebrows.