Two individuals that are heterozygous for curly hair (H) reproduce. Use the Punnett square to determine the probability that their offspring will express the recessive trait of straight hair (h).

• A. 0%

• B. 25%

• C. 50%

• D. 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

The pedigree below shows a two generation family. Based on the information shown in the pedigree, what is the probability of individual II-1 being heterozygous?

• A. 25%

• B. 50%

• C. 75%

• D. 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Joseph created the punnett square. Which of the following correctly states the offspring probabilities?

• 100% heterozygous

• 50% heterozygous, 50% homozygous dominant

• 50% heterozygous, 50% homozygous recessive

• 75% homozygous dominant, 25% homozygous recessive

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Use the Punnett square to determine the probability of having a homozygous recessive offspring if one parent is homozygous dominant and one parent is homozygous recessive.

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

Use the pedigree below to answer the following question. What is the probability of individuals II-1 and II-2 having heterozygous offspring?

• 0%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

Use the pedigree below to answer the following question. What is the probability that individual II-2 is homozygous for the dominant trait?

• 0%

• 25%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Use the pedigree below to answer the following question. If the genotype for individual I-2 is rr, what is the genotype for individual I-1?

• Rr

• RR

• Rr or rr

• RR or Rr

Tags

NGSS.HS-LS3-1

The Punnett square below is missing the genotype for one of the parents. Which of the following correctly identifies the missing genotype of the second parent that produced this cross?

• rr

• Rr

• RR

• RR or Rr

Tags

NGSS.HS-LS3-1

Which Punnett square represents a 50% probability of having homozygous dominant offspring?

• 
• 
• 
• 

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which Punnett square represents a 50% probability of having heterozygous offspring?

• 
• 
• 
• 

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2