Introduction to Genetics — Unit test Answers
0 verified answers
1
Free Preview
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.2
Free Preview
What is genotype for a recessive trait found on the female chromosome?
A
YhB
XhC
XHD
YH3
Hemophilia is an X-linked recessive disorder (Xh) that is passed through generations and can be traced by using a pedigree. Based on the pedigree, if Charles and Marie have a daughter in the future, what is the probability that she will have hemophilia?
A
0 percentB
25 percentC
50 percentD
100 percent4
Which pedigree symbol is used to represent a female carrier of a recessive X-linked trait?
A
An empty circle.
B
A half-filled circle.
C
An empty square.
D
A filled square.
5
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.
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.
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.
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.
Did you find these answers helpful?
Verified answers available
TRY EDGENUITY HACKS
- Auto Complete Exams
- Auto Complete Assignments
- Skip Videos Instantly
50,000+ students using this