10.2 Inheritance

Question 1

Dihybrid Cross

Answer 1

this is a cross between organisms with two different characteristics
ratio of two heterozygotes for both characteristics is 9:3:3:1

Question 2

Dihybrid Test Cross

Answer 2

same reason as with monohybrid
do a test cross using an organism that expresses both recessive characteristics
if parent is heterozygous then ratio is 1:1:1:1
if parent is homozygous then all offspring are heterozygous