Sex-Linked Traits

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

How many PAIRS of sex chromosomes do humans have?

• 23
• 46
• 1
• 2

Identify the genotype for females.

• XY
• XX
• X
• XXYY

Identify the genotype for males.

• XY
• XX
• XXY
• YY

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

• X^BX^B
• X^bX^b
• X^bY
• X^BY

Tags

NGSS.HS-LS3-1

In fruit flies, red eye color (R) is a sex-linked trait that is dominant over white eye color (r).
According to the Punnett square, what percentage of female offspring will have red eyes?

• 75%
• 25%
• 0%
• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Duchenne muscular dystrophy is a recessive x-linked disorder.
According to the Punnett square, what percentage of male offspring will have the disorder?

• 0%
• 25%
• 50%
• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

Hemophilia is a recessive x-linked disorder. According to the Punnett square, what percentage of offspring will have the disorder?

• 0%
• 25%
• 50%
• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

If a woman is a carrier for a sex linked recessive trait of hemophilia and her husband has hemophilia, which of the following is true?

• All sons will have hemophilia
• All daughters will have hemophilia
• 50% of daughters and 50% of sons have hemophilia
• 0% of sons have hemophilia but 100% of daughters are carriers

Tags

NGSS.HS-LS3-1

Colorblindness is a recessive x-linked trait.
Which genotype represents a male with normal vision?

• X^NX^N
• XY^N
• X^NY
• XⁿY

Tags

NGSS.HS-LS3-1