Genetics Short Quiz 3

Look at the Punnett Square. What is TRUE about the parents?

• They are homozygous dominant

• They are both heterozygous

• One is homozygous and the other is heterozygous

• Both are homozygous recessive

Look at the Punnett Square. What goes in the missing square "?"

• BB

• Bb

• bb

What belongs in square #1?

• Tt

• TT

• tt

B = brown eyes and b = blue eyes. If a homozygous dominant brown eyed parent and a heterozygous brown eyed parent had offspring, what is their genotypic cross?

• BB x BB

• BB x Bb

• bb x BB

• bb x bb

Look at the punnett square. What is the probabililty that the offspring will have blue eyes?

• 0%

• 25%

• 50%

• 100%

What are the missing genotypes?

• 1 - tt, 2 - tt

• 1 - Tt, 2 - tt

• 1 - TT, 2 - tt

A woman has type B blood and her husband has type A blood. Two of their children have type B blood and two have type AB blood. What are the genotypes of the parents?

• AO and BB

• AA and BB

• AA and BO

• OO and AB