Genetic Punnett Square

T = tall ; t = short

In the Punnett Square shown, what belongs to the missing square?

• tt

• Tt

• Bb

• TT

What you see, or the physical appearance.

• Genotype

• Phenotype

• Homozygous

• Heterozygous

What is the probability of heterozygous offspring?

• 25%

• 50%

• 0%

• 100%

What allele combination should go in the missing box?

• BB

• Bb

• bb

• none of these

What is the probability of a genotype represents by each box of the Punnett Square?

• 25%

• 50%

• 10%

• 0%

Which choice best represents the genotype of this cross?

• 1Yy : 2yy

• 2Yy : 2yy

• 3Yy : 1yy

• 1Yy : 3yy

Which choice best represents the phenotype of this cross?

• 2 yellow : 2 green

• 2Yy : 2yy

• 1 yellow : 2 green

• 1Yy : 3yy

What is the phenotype of the offspring? (A - brown hair ; a - blond hair)

• 50% brown hair and 50% blond hair

• 25% brown hair and 75% blond hair

• 75% brown hair and 25% blond hair

• 0% brown hair and 100% blond hair

Which of the following genotypes is homozygous dominant?

• A

• Aa

• AA

• aa

Which of the following genotypes is heterozygous?

• Bb

• BB

• bb

• B