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T = tall and t = short

What genotype belongs in the missing box of the Punnett square?

• tt

• Tt

• Bb

• TT

What allele combination should go in the missing box of the Punnett square?

• AA

• Aa

• aa

• none of these

A = Brown hair and a = blond hair

What are the phenotype percentages of the offspring?

• 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

What percent of offspring will have the homozygous recessive genotype?

• 25%

• 50%

• 75%

• 100%

What is the probability of homozygous dominant offspring?

• 0%
• 100%
• 50%
• 25%

Which of the following represents a heterozygous genotype?

• Tt

• BB

• ff

• Curly

Which of the following represents a homozygous dominant genotype?

• Tt

• BB

• Ff

• gg

What are the chances that the offspring will have the homozygous recessive genotype?

• 1 in 4

• 4 out of 4

• 75%

• 50%

Which of the following is true about both parents in this Punnet square?

• Both are homozygous dominant.

• Both are homozygous recessive.

• Both are heterozygous.

• Both have blue eyes.

What are the genotype ratios in the Punnett square?

• 1/4 blue eyes, 3/4 brown eyes

• BB = 1/4, Bb = 2/4, bb = 1/4

• BB = 2/4, bb = 2/4

• All brown eyes