Genetics Review

PKU is an autosomal recessive disorder. A man is a carrier of PKU and his wife is heterozygous.

What is the probability they have a child who suffers from PKU?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

PKU is an autosomal recessive disorder. A man is a carrier of PKU and his wife is heterozygous.

What is the probability they have a homozygous dominant child?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

PKU is an autosomal recessive disorder. A man is a carrier of PKU and his wife is heterozygous.

Which is/are true about the man? Pick all that apply

• The man's genotype is Hh

• The man's genotype is the same as his wife

• the man does not suffer from PKU

• PKU is found on the X chromosome

• Only one allele is needed to suffer from this disease

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Examine the pedigree of this family with a history of PKU. What is the genotype of person 3?

• HH

• Hh

• hh

• H?

• ?h

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Examine the pedigree of this family with a history of PKU. Which are true of person 4? Pick all that apply.

• Person 4 is male

• Person 4 is heterozygous

• Person 4 has three other siblings

• Person 4's genotype is different from his/her siblings

• Person 4 does not suffer from PKU

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Examine the pedigree of this family with a history of PKU. Person 8 does NOT suffer from PKU. What was the probability of this happening?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Hemophilia is a X-linked recessive disorder. A healthy man is married to a woman who suffers from hemophilia.

What is the probability they have a child who suffers from hemophilia?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Hemophilia is a X-linked recessive disorder. A healthy man is married to a woman who suffers from hemophilia.

Which is/are true about their potential children? Pick all that apply.

• If the child is a girl, they would be healthy

• If the child is a boy, they would be healthy

• If the child is a boy, they would have hemophilia

• If the child is a girl, they would have hemophilia

• If the child is a girl, they would be carriers

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the genotype of person 4?

• X^H X^H

• X^H X^h

• X^h X^h

• X^H X^?

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the genotype of person 10?

• X^H X^H

• X^H X^h

• X^h X^h

• X^H X^?

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2