Question

Tongue rolling is dominant. A father cannot roll his tongue but a mother can. Of their three children, one daughter and one son cannot roll her tongue. The other daughter can roll her tongues.

For the Tongue Rolling pedigree, what is the genotype of a tongue roller?

A.RR and rr

B.rr and Rr

C.Rr and RR

D.rr

Answer 1

C. Rr and RR

Step-by-step explanation:

I believe this is the answer because they said that it was a dominant geen.