Punnett Squares

Which trait is dominant?

• pinkish purple

• white

Tags

NGSS.HS-LS3-1

In the Punnett square, what belongs in the missing square?

• tt

• Tt

• TT

Tags

NGSS.HS-LS3-1

Each one of the boxes on the Punnett square represents what probability of an offspring's genotype?

• 25%

• 1%

• 10%

• 0%

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

• recessive

• dominant

• both

Which of the following alleles is purebred recessive?

• Tt

• tt

• TT

Which of the following genotypes is homozygous dominant?

• aa

• Aa

• AA

In the Punnett square shown, what must the genotype of the missing parent be?

• BB

• Bb

• bb

• Tt

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

B = brown fur  b = white fur
In the Punnett square, what is the probability for white fur? 

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

What are the possible genotypes for this cross?
(Click the picture to see it without the text)

• TT = 25% Tt= 50% tt=25%

• all tall

• TT= 75% tt = 25%

• Tt = 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What genotype would go in box 3?

• BB

• Bb

• bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2