Pedigree Practice

In the second generation-how many people are carriers of the trait?

• 2
• 3
• 5
• 6

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Examine the pedigree. The allele for the presence of a widow’s peak is dominant. Therefore, we can tell from the chart that in the couple labeled 2:

• the male is heterozygous and the female is homozygous.
• the male is homozygous and the female is heterozygous.
• the male is homozygous and the female is homozygous.
• the male is heterozygous and the female is heterozygous.

Tags

NGSS.HS-LS3-1

There are no carriers for Huntington's Disease- you either have it or you don't. Is Huntington's disease caused by a dominant or recessive trait?

• Dominant
• Recessive

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

How are individuals III-2 and II-4 related?

• Cousins
• Dad and Daughter
• Uncle and Niece
• Grandpa and Granddaughter

Tags

NGSS.HS-LS3-1

How are individuals I-2 and III-5 related?

• Grandpa and grandson
• Mom and son
• Uncle and nephew
• Grandma and grandson

Tags

NGSS.HS-LS3-1

Huntington's Disease is a dominant trait.
What is the correct genotype for individual I-2?

• HH
• Hh
• hh
• H_

Tags

NGSS.HS-LS3-1

Huntington's Disease is a dominant trait.
What is the correct genotype for individual II-2?

• HH
• Hh
• hh
• H_

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Is having a hitchhiker's thumb dominant or recessive? (The carriers are not marked.) 

• Dominant
• Recessive

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the genotype for individual III-2?

• TT
• Tt
• tt
• T_

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Is it possible for individual IV-2 to be a carrier? Why?

• No, because her parents don't have the trait.
• No, because she doesn't have the trait.
• Yes, because her siblings have it.
• Yes, because her parents are carriers.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2