Sex-Linked Traits

Colorblindness and hemophilia alleles are found on

• autosomal chromosomes

• sex chromosomes

Which sex chromosomes do females have?

• XX

• XY

Which sex chromosomes do males have?

• XX

• XY

X-Linked traits are more common in

• males

• females

Which allele codes for an X-Linked recessive trait?

• X^T

• X^t

• Y^T

• Y^t

Which allele does not code for an X-linked (dominant OR recessive) trait?

• X^T

• X^t

• Y

Hemophilia is an x-linked recessive trait. Which genotype represents a carrier female?

• X^HX^H

• X^HX^h

• X^hX^h

• X^HT

• X^hY

Tags

NGSS.HS-LS3-1

Color-blindness is an x-linked recessive trait. Which genotype represents a colorblind female?

• X^BX^B

• X^BX^b

• X^bX^b

• X^BY

• X^bY

Tags

NGSS.HS-LS3-1

Hemophilia (h) is an x-linked recessive trait. What are the chances that a daughter would be a carrier?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Hemophilia (h) is an x-linked recessive trait. What is the genotype of Charles and Marie's child?

• X^HX^H

• X^HX^h

• X^hX^h

• X^HY

• X^hY

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2