12) Jenny has red hair and freckles. We know that non-red hair (R) is dominant to red hair (r), and that freckles (F) are dominant to plain skin (f). She tells you that her mom has brown hair and freckles, and that her dad has red hair and plain skin. Furthermore, she says that her maternal grandmother (her mom’s mom) had red hair and plain skin. a) What is Jenny’s genotype? b) Jenny’s mom is pregnant with a second child. What is the probability that Jenny will have a brother or sister with brown hair and plain skin? (do a Punnett Square to figure out the probability)