AnswersFL-2000310-Biology 1 Sem 1 - FlexSex-linked Inheritance

Sex-linked Inheritance Answers

0 verified answers1 views
1
Free Preview

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

A
Yh
B
Xh
C
XH
D
YH
2
Free Preview

Hemophilia is an X-linked recessive disorder. What is the probability of the offspring having hemophilia for the cross that is shown in the Punnett square?

Question illustration
A
0 percent
B
25 percent
C
50 percent
D
75 percent
3

How are the alleles for sex-linked traits inherited?

A
They are passed from the Y chromosome in parents to the X chromosome in offspring.
B
They are passed from the X chromosome in parents to the XY chromosome in offspring.
C
They are passed from parents to offspring on the X and Y chromosomes.
D
They are passed from any chromosome in the parents to the X or Y chromosome in the offspring.
4

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

A
XRXr
B
XrXr
C
XRY
D
XrY
5

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?

Question illustration
A
0 percent
B
25 percent
C
50 percent
D
100 percent
6

What was Thomas Hunt Morgan's main contribution to science?

A
He discovered that certain traits were linked to the X chromosome.
B
He was the first to use fruit flies in research.
C
He created the first white-eyed female Drosophila.
D
He created the first white-eyed male Drosophila.
7

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?

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.
Option A
B
A Punnett square is shown. The columns are labeled Upper X Upper R and Upper Y. The rows are labeled x Upper R and x r. Clockwise, from top-left, the boxes include: Upper X Upper R Upper X Upper R, Upper X Upper R Upper Y, Upper X r Upper Y, Upper X uppercase Upper R Upper X r.
Option B
C
A Punnett square is shown. The columns are labeled Upper X r and Upper Y. The rows are labeled x r and x r. Clockwise, from top-left, the boxes include: Upper X r Upper X r, Upper X r Upper Y, Upper X r Upper Y, Upper X r Upper X r.
Option C
D
A Punnett square is shown. The columns are labeled Upper X r and Upper Y. The rows are labeled x Upper R and x r. Clockwise, from top-left, the boxes include: Upper X Upper R Upper X r, Upper X Upper R Y, Upper X r Upper Y, Upper X r Upper X r.
Option D
8

Which symbol is used to label a male that expresses a sex-linked disorder on a pedigree?

A
An empty circle.
Option A
B
A half-filled circle.
Option B
C
An empty square.
Option C
D
A filled square.
Option D
9

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

A
It results in a dominant trait.
B
The alleles are found on the X or Y chromosome.
C
The resulting trait is influenced by multiple alleles.
D
It is affected by alleles on at least three different chromosomes.
10

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?

Question illustration
A
0 percent
B
25 percent
C
50 percent
D
100 percent

Did you find these answers helpful?

More from this Course

Quiz
20 verified answers

Lab: Mouse Genetics (Two Traits)

Quiz
10 verified answers

Sex-linked Inheritance

Quiz
10 verified answers

Darwin's Theory