Dominance and Punnett Squares

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

Tags

NGSS.HS-LS3-1

Which of the following best describes the genotype "Rr"?

• recessive

• heterozygous

• purebred

• all of the above

Which of the following genotypes are homozygous?

• Aa

• BB

• dd

• BB and dd

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

Tags

NGSS.HS-LS3-1

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

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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

• 
• 
• 
• 

Tags

NGSS.HS-LS3-1

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

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If both parents have the genotype Aa, what is the chance their offspring will also have the genotype Aa?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3