Punnett Squares Practice

What percentage of the genotypes are AA?

• 1 box = 25%

• 2 boxes = 50%

• 3 boxes = 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS4-3

What percentage of the genotypes are Aa?

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS4-3

If brown eyes are dominant and blue eyes are recessive, what color eyes do the parents in this Punnett Square have?

• one has brown eyes and the other has blue eyes

• they both have blue eyes

• they both have brown eyes

• there's no way to tell based on this information

Based on this Punnett square, what is the chance that an offspring will have a homozygous genotype?

• 0%

• 25%

• 50%

• 75%

• 100%

Cody crosses a plant producing wrinkled peas with a plant producing smooth peas. Weeks later, he discovers that all the offspring plants have smooth peas. Cody drew the Punnett square above to show the genotypes of the offspring plants. What were the genotypes of the parent plants?

• RR and rr

• Rr and Rr

• RR and Rr

• Rr and rr

Which of the following genotypes is dominant?

• AA

• Aa

• aa

• both AA and Aa

How would you write a homozygous dominant genotype?

• AA

• Aa

• aa

• either AA or Aa

If tall plants are dominant and short plants are recessive, how would you write the genotype for a homozygous tall plant?

• BB

• Bb

• bb

If black fur is dominant and white fur is recessive, what genotype would an organism with white fur have?

• FF

• Ff

• ff

Which of these Punnett squares represents a cross between a homozygous dominant parent and a heterozygous parent?

• 
• 
• 
• 

Tags

NGSS.HS-LS3-1