Punnett Squares

Why do scientist use Punnett Squares?

• A tool scientist use to to see alleles

• A tool scientist use to see which alleles are dominant

• A tool scientist use to determine possible genotypes for offspring

Which of the following is a Homozygous Dominant Genotype?

• Yy

• XX

• zz

Which of the following is a homozygous recessive genotype?

• HH

• dd

• Aa

Which of the following is a heterozygous genotype?

• Gg

• UU

• pp

In a Punnett Square, 1 box is equal to 25%. How much are 3 boxes equal to?

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-3

Fill in the Yellow Box

• AA

• Aa

• aa

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Fill in the Yellow Box

• Bb

• BB

• bb

The punnett square is used to tell the color of a frogs skin. "G" means green skin and "g" means brown skin. What is the chance the baby frogs will have brown skin?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

What is the mother's genotype?

• DD

• Dd

• dd

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In pea plants, the tall allele is dominant to the short allele. What key would demonstrate this?

• Tall = T
  Short = S
• Tall = T
  Short = t
• Tall = t
  Short = T
• Tall = TT
  Short = tt

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2