X Linked Problems

Colorblindness is a X-linked recessive disorder. A normal woman whose father was colorblind marries a man with normal color vision. What percentage of their sons will be colorblind?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Hemophilia is a X-linked recessive disorder. A woman with hemophilia marries an unaffected man whose father had hemophilia. What percentage of their daughters will have hemophilia?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Colorblindness is a X-linked recessive disorder. If the daughter of a couple is colorblind, what are the two possible genotypes of her mother?

• X^AX^A and X^AX^a

• X^AX^A and X^aX^a

• X^AX^a and X^aX^a

• Cannot be determined

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If a trait shows up more commonly in men than women it is probably

• not inherited
• on the x chromosome and dominant
• on the x chromosome and recessive
• on a normal body chromosome

What percentage of the female offspring will be a carrier for this recessive disease?

• 0%
• 50%
• 100%
• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following is NOT a X-linked trait?

• Color-blindness

• Muscular Dystrophy

• Huntington disease

• Hemophilia

Hemophilia is a recessive X-linked disorder.

Which genotype represents a female who is a carrier for hemophilia?

• X^HX^h

• X^hX^h

• X^HX^H

• X^hY

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Hemophilia is a recessive X-linked disorder.

Which genotype represents a male with hemophilia?

• X^HX^h

• X^hX^h

• X^HY

• X^hY

Colorblindness is a recessive X-linked disorder.

Which genotype represents a male with normal vision?

• X^NX^N

• XⁿXⁿ

• X^NY

• XⁿY

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following genotypes belongs in the red box in the Punnett square?

• X^BX^b
• X^bX^b
• X^bY
• X^BY