Heredity Vocabulary and Punnett Square Review

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa

Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

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

• 0%

• 25%

• 75%

• 100%

A homozygous dominant brown mouse is crossed with a heterozygous brown mouse

(Brown is the dominant color and tan is the recessive color). 

• 100 % tan
• 100 % brown 
• 50 % brown and 50% tan 
• 75 % brown and 25 % tan 

What allele combination should go in the missing box?

• AA
• Aa
• aa
• none of these

What belongs in Box 2?

• y

• Y

• YY

• yy

What belongs in Box 4?

• Y

• YY

• Yy

• yy

What belongs in Box 8?

• Y

• YY

• Yy

• yy

What belongs in box 1?

• F

• f

• FF

• Ff

What belongs in box 4?

• F

• FF

• Ff

• ff