A cross is set up involving five genes | Homework Helpers

1. A cross is set up involving 5 genes: (assume independentassortment)

AaBBCcIDEe x AABbccIDEe

(a.)    What proportion of the progeny will have thesame genotype as parent 1?
(b.)    What proportion of the progeny will have thesame genotype as parent 2?
(c.)    What proportion of the progeny will have thesame phenotype as parent 1?

2. In patoodles Purple fur (P) is dominant to orange fur(p). If you mate two patoodles that are both heterozygous forP (Pp) what are the chances that a litter of four patoodle pupswill be:

    a. All orange?
    b. All purple?
    c. 2 purple and 2 orange, in thatorder?

3. A man whose mother is affected with a fairly rareautosomal recessive disease marries a woman whose brother has thesame disease. Their first child is affected. Theirsecond child looks normal. What is the chance their secondchild is a carrier for the disease? (hint- draw out a pedigreefirst)