Lab: Mouse Genetics (Two Traits)

Question 1

Error

Revolt · Accepted Answer

C: 50 percent

Question 2

Which statement is always true when describing sex-linked inheritance?

Revolt · Accepted Answer

B: The alleles are found on the X or Y chromosome.

Question 3

Error

Revolt · Accepted Answer

C: alleles that are carried on X and Y chromosomes

Question 4

Hemophilia is an X-linked recessive disorder (Xh) that is passed through generations and can be traced by using a pedigree. What is the probability that a female child of Charles and Marie would suffer from hemophilia?

Revolt · Accepted Answer

A: 0 percent

Question 5

What is the purpose of using a pedigree?

Revolt · Accepted Answer

B: to understand patterns of inheritance in organisms

Question 6

Which allele combination represents a female who is heterozygous for a sex-linked trait?

Revolt · Accepted Answer

C: XRXr

Question 7

Duchenne muscular dystrophy is an X-linked recessive disorder. What is the probability that a female offspring of the cross that is shown above would have a recessive allele for Duchenne muscular dystrophy disorder?

Revolt · Accepted Answer

D: 100 percent

Question 8

Drosophila eye color is an X-linked trait. Red eye color is dominant, and white eye color is recessive. Which Punnett square shows a cross in which the probability of offspring will have red eyes is 100 percent?

Revolt · Accepted Answer

A: A Punnett square is shown. The columns are labeled Upper X r and Upper Y. The rows are labeled x Upper R and x Upper R. Clockwise, from top-left, the boxes include: Upper X Upper R Upper X r, Upper X Upper R Y, X Upper R Upper Y, X Upper R Upper X r.

Question 9

Which allele combination represents a female who is a carrier for an X-linked recessive disorder?

Revolt · Accepted Answer

A: XRXr

Question 10

What is genotype for a recessive trait found on the female chromosome?

Revolt · Accepted Answer

B: Xh

Lab: Mouse Genetics (Two Traits) Answers

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