17.4 dihybrid inheritance

Question 1

what is dihybrid inheritance?

Answer 1

2 characters, determined by 2 different genes located on different chromosomes, are inherited

Question 2

what is the law of independent assortment?

Answer 2

each member of a pair of alleles may combine randomly with either of another pair

Question 3

draw a dihybrid cross between 2 pure breeding fruit flies with red eyes (R) and tiny wings (t) and pink eyes (r) and normal wings (T)

Answer 3

100% RrTt with red eyes and normal wings

Question 4

what is the ratio of a dihybrid cross?

Answer 4

9:3:3:1