Help? giving 25 points

% Normal chin (NN) - 25%

% Normal chin (Nn) - 50%

Explanation:

Create a punnett square using Nn and Nn. Since both mom and dad have a dominant trait, but carries that recessive trait, it is considered "Nn".

N n x N n = NN, Nn, Nn, nn

% Normal chin (NN) - 25%

% Normal chin (Nn) - 50%

% Abnormal chin (nn) - 25%

b

is correct hope this   also i learnd this in middle school

if you know your abc's you should be able to get your answer or just use google