Sex-linked Traits

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

• X^BX^b

• X^bX^b

• X^BX^B

• X^bY

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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

• X^BX^b
• X^bX^b
• X^bY
• X^BY

Tags

NGSS.HS-LS3-2

Different variations of a gene are called?

• Alleles
• DNA
• Chromosome
• Gene

Tags

NGSS.HS-LS3-2

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

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Colorblindness is a recessive X-linked disorder.

Which genotype represents a male with normal vision?

• X^N Y^N

• Xⁿ Yⁿ

• X^N Y

• Xⁿ Y

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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

Tags

NGSS.HS-LS3-1

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

• 1

• 2

• 0

• 3

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

• Males

• Females

• Both males and females

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

• SEX
• XX
• XY
• Autosomes
• 46
• 23

Tags

NGSS.HS-LS3-1

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?

Tags

NGSS.HS-LS3-1