Sex-linked Inheritance

Presentation

•

Biology

•

9th Grade

•

Medium

•

NGSS.HS-LS3-1, 5.2 Complex inheritance patterns, NGSS.HS-ESS2-4

Standards-aligned

AMANDA GOGOLIN

Used 704+ times

FREE Resource

3 Slides • 15 Questions

Sex-linked Traits are found on the Sex Chromosomes

Sex-Linked Traits

Dropdown

X and Y are

chromosomes. Females are

and males are

Sex-linked Traits are shown as a Superscript on the X or Y.

Sex-Linked Traits

Multiple Choice

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?

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

$X^RX^R$

$X^rX^r$

Multiple Choice

Which genotype shows a male with white eyes?

R = Red, r= white

$X^rY$

$X^RY$

Match

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

Male without hemophilia

Female with hemophilia

Female Carrier

Male with hemophilia

Female who is NOT a carrier

X^HY

X^hX^h

X^H X^h

X^hY

X^HX^H

1. Write out XX or XY

Add in trait to the X only
Fill out punnett square as normal.

How to show Punnett Square

Multiple Choice

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

X^BX^b

X^bX^b

X^bY

X^BY

Multiple Choice

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

Draw

Show punnett square for X^rX^rcrossed with X^RY

Multiple Choice

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

Draw

Hemophilia (h) is recessive. Draw a punnett square for X^hX^h with X^HY

Multiple Choice

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

100%

75%

50%

25%

Multiple Choice

What is the chance that a daughter will be colorblind?

100%

50%

25%

Multiple Choice

What chance will a boy will be colorblind?

100%

50%

25%

Multiple Choice

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

Males

Females

Both males and females

Dropdown

are more likely to have an x-linked trait because males have only

X chromosome. Females can be

of an X-linked trait because they can be

for the trait since they have

X's.

Poll

Rate how well you understand this topic.

Sex-linked Traits are found on the Sex Chromosomes

Sex-Linked Traits

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