Free Printable Dihybrid and Sex-linked Traits Review

Worksheets

Dihybrid and Sex-linked Traits Review

Total questions: 22

Worksheet time: 44mins

Name

Class

Date

If you have a parent who has GgBb as their genotype, what are the possible alleles they could donate to their gametes?

GB, Gb, gB, gb

GB, GB, gb, gb

Gb, Gb, Gb, GB

GG, BB, gg, bb

How many offspring will you have in a dihybrid cross?

T4 - What genotype is missing from this Punnett Square?

RrYy

RRYY

rryy

RrYY

T4 - Based off this Punnett Square, what fraction of the offspring will have wrinkled, yellow seeds?

9/16

3/16

1/16

16/16

Assume mom's gametes are on the left, what is her genotype?

TTZz

TtZz

ttZZ

TtZZ

What goes in box 3

Aabb

AABB

AAbb

aaBb

Cross Two Homozygous plants
(RRYY x rryy)
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds?

25%

50%

100%

Using the dihybrid cross and key provided, what is the probability of the offspring being tall and white?

What are the female chromosomes?

10.

What are the male chromosomes?

11.

A male inherits an x-linked trait from his

father

mother

12.

If a female express a recessive sex-linked trait, then all of her ______ _______ offspring will show the trait as well.

biologically male

biologically female

13.

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?

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

$X^RX^R$

$X^rX^r$

14.

Which genotype shows a male with white eyes?

R = Red, r= white

$X^rY$

$X^RY$

15.

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

16.

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

X^BX^b

X^bX^b

X^bY

X^BY

17.

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

18.

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

100%

75%

50%

25%

19.

What is the chance that a daughter will be colorblind?

100%

50%

25%

20.

What chance will a boy will be colorblind?

100%

50%

25%

21.

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

Males

Females

Both males and females

22.

(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

100 %

Dihybrid and Sex-linked Traits Review

Total questions: 22

Worksheet time: 44mins

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