Question

In humans, earlobes that are suspended are dominant over those that are attached. If a mother has suspended earlobes (but her mother did not) and the father has attached earlobes, what are the chances that their first child will have attached earlobes What about the fourth child?

Answer 1

Rr= mother
rr= father

so,
by making a reltional graph ee get
by 1st child chance = Rr
2nd child= rr
3rd child= rr
4th child = Rr

so there is 50% chance for the first child