Free Printable Sex Linked Traits

Worksheets

Sex Linked Traits

Total questions: 21

Worksheet time: 27mins

Name

Class

Date

X and Y are (a) chromosomes. Females are (b) and males are (c) .

Choose from the below words

SEX

Autosomes

In fruit flies, eye color is a sex-linked trait. Red (R) is dominant to white (r).

Which genotype shows a female fly with white eyes?

$X^{R^{ }}X^r$

$X^RX^R$

$X^rX^r$

Which genotype shows a male with white eyes?

R = Red, r= white

$X^rY$

$X^RY$

Match the following. H= no hemophilia, h = hemophilia

Male without hemophilia

X^HY

Female with hemophilia

X^hX^h

Female Carrier

X^H X^h

Male with hemophilia

X^hY

Female who is NOT a carrier

X^HX^H

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

X^BX^b

X^bX^b

X^bY

X^BY

The following punnett square depicts the x-linked cross of a female who carries hemophilia with a man showing no symptoms. Fill in the genootype represented by the blank box in the punnett square.

X^H X^H

X^hX^H

X^H Y

X^h Y

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

What is the likelihood of this cross have a child that is colorblind?

100%

75%

50%

25%

What is the chance that a daughter will be colorblind?

100%

50%

25%

10.

What chance will a boy will be colorblind?

100%

50%

25%

11.

Who is more likely to have an X-linked trait?

Males

Females

Both males and females

12.

(a) are more likely to have an x-linked trait because males have only (b) X chromosome. Females can be (c) of an X-linked trait because they can be (d) for the trait since they have (e) X's.

Choose from the below words

Males

one

carriers

heterozygous

two

homozygous

Females

Dominant

Recessive

13.

Different variations of a gene are called?

Alleles

DNA

Chromosome

Gene

14.

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

fathers pass the allele for colorblindness to their sons only

the allele for colorblindness is located on the Y chromosome

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

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

15.

Colorblindness is a recessive X-linked disorder.

Which genotype represents a male with normal vision?

X^NY^N

XⁿYⁿ

X^NY

XⁿY

16.

The sex of a child is determined by

whether the father's sperm contains an x or y chromosome

whether the mother's egg contains an x or y chromosome

the age of the parents

whether the mother's egg contains an xx or xy

17.

How many recessive genes does a carrier female have for colorblindness?

18.

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?

25%

50%

75%

19.

The woman who is colorblind marries a man with normal vision. What is the probability that their sons will be colorblind?

25%

50%

100%

20.

If a gene is found only on the X chromosome and not the Y chromosome, it is said to be

sex-linked trait

polygenic trait

codominant trait

incomplete dominance trait

21.

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

X^BX^b

X^bX^b

X^BX^B

X^bY

100 %

Sex Linked Traits

Total questions: 21

Worksheet time: 27mins

Similar Resources on Wayground