Consider a dominant genetically inherited condition:

Dwarfism $($dominant$,$ D$)$ v$.$ non$-$dwarfed height $($recessive$,$ d$).$ A couple has determined $($based on their family histories$)$ that her genotype is Dd and his is also Dd$.$

What is the likelihood that a child by these two people would exhibit dwarfism?

$100\%$

$75\%$

$25\%$

$0\%$