Quiz Punnett Square

T - tall and t = short

In the punnett square below, what belongs in the missing square

• tt

• Tt

• TT

What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness?

• 0 in 4

• 1 in 4

• 2 in 4

Each of the 4 boxes on a Punnett Square represents this probability of an offsprings' genotype?

• 25%

• 50%

• 100%

Percent phenotype of the cross: 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

B = brown fur b = white fur

In the punnett square, what is the probability for white fur?

• 0%

• 25%

• 50%

What allele combination should go in the missing box?

• AA

• Aa

• aa

An offspring will receive how many alleles from each parent to determine a specific trait?

• one

• two

• four

What is the probability of a heterozygous offspring?

• 25%

• 50%

• 75%

B is brown eyes and b is blue eyes. What chance is there that the offspring will have brown eyes?

• 25%

• 50%

• 75%

What are the possible genotypes for this cross?

• TT = 25% Tt= 50% tt=25%

• TT= 75% tt = 25%

• Tt = 100%