In: Biology
Your high school crush is working with a breed of guinea pig in which the side on which the hair parts down the back is inherited, and it can either be on the left or the right. Left-parting appears to be dominant in this system. S/he/they crosses true-breeding parents that are phenotypically left-parters and gets a generation of right-parters. Inbreeding the F1 produces a generation that consists entirely of left-parters.
f. How is this trait transmitted?
g. What are the genotypes of the parents and the genotypic ratios of the F1 and the F2?
h. What was the genotype of the mother of the original female parent?