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Sex-Linked Traits Quiz

Total questions: 10

Worksheet time: 19mins

Name
Class
Date
1.

What are the possible offspring genotypes of a cross between a male with hemophilia and a carrier female.

a)

XXhh, XhXh, XHY, XhY

b)

XHXH, XhXh, XHY, XhY

c)

XHXh, XhXh, XHY, XhY

d)

XHXh, XHXh, XhY, XhY

2.

Explain how the inheritance of color blindness is different between males and females.

a)

Color blindness is inherited from both parents in females, while males inherit it from their mothers only.

b)

Color blindness is inherited from both parents in males, while females inherit it from their fathers only.

c)

Males inherit color blindness from their fathers, while females inherit it from their mothers.

d)

Males inherit color blindness from their mothers, while females inherit it from both parents.

3.

What are some examples of sex-linked traits in humans? Provide at least two examples.

a)

Color blindness and hemophilia

b)

Blonde hair and blue eyes

c)

Attached earlobes and widow's peak

d)

Left-handedness and freckles

4.

Describe the inheritance pattern of hemophilia in a family with a carrier mother and unaffected father.

a)

There is a chance that male offspring will have hemophilia

b)

There is a chance that female offspring will have hemophilia

c)

None of the offspring will have hemophilia

5.

Which of the following genotypes shows a CARRIER for a trait?

a)

XBXb

b)

XbXb

c)

XBXB

d)

XbY

6.

Colorblindness is a recessive X-linked disorder.

Which genotype represents a male with normal vision?

a)

XN YN

b)

Xn Yn

c)

XN Y

d)

Xn Y

7.
Which of the following genotypes belongs in the red box in the Punnett square?
a)
XBXb
b)
XbXb
c)
XbY
d)
XBY
8.

Colorblindness is more common in males than in females because......

a)

fathers pass the allele for colorblindness to their sons only

b)

the allele for colorblindness is located on the Y chromosome

c)

the allele for colorblindness is recessive and located on the X chromosome

d)

males who are colorblind have two copies of the allele for colorblindness

9.

Colorblindness is a sex-linked recessive trait. A colorblind woman marries a male with normal color vision. What is the percent chance of them having a color blind son?

a)

0%

b)

25%

c)

50%

d)

75%

10.
What is the genotype of the mother?
a)
BB
b)
bb
c)
Bb
d)
BB or Bb