Question

why does younger one resemble both mother and father​

Answer 1

Answer:

I mean, why don't all kids from the same parents look exactly alike, since the parents just have one set ... Same for the mother. ... To make a sperm cell, only one half of the X is contributed.

Answer 2

Answer:

Human evolution, then, could have favored children that resemble their fathers, at least early on, as a way of confirming paternity. ... Some studies have even found that newborns tend to resemble their mothers more than their fathers.