Punnet Review

T - tall and t = short
In the punnett square below, what belongs in the missing square

• tt
• Tt
• Bb
• TT

What allele combination should go in the missing box?

• AA
• Aa
• aa
• none of these

If B = brown hair and b = blonde hair, what is the probability of brown hair?

• 25%
• 50%
• 0%
• 75%

G = green, g = yellow
The genotype for a yellow plant is...

• GG
• Gg
• gg
• all of the choices result in yellow

In rabbits, black fur (B) is dominant over brown fur (b). If a rabbit has brown fur, what can you conclude about its genotype?

• It is BB.
• It is Bb
• It is brown
• It is bb.

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 

What percent of offspring will have the recessive trait?

• 25
• 50
• 75
• 100

What is a phenotype

• The genetic make up (code)
• The physical trait

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa

What is the probability of heterozygous offspring?

• 25%
• 50%
• 0%
• 100%