X-Linked Inheritance

Quiz
•
Biology
•
9th - 12th Grade
•
Medium
Ruth Hamilton
Used 90+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Orange or black fur is a single, X-linked, co-dominant trait in cats. Calico cats have white fur with patches of orange and black. Is it true that calico cats can only be female?
Yes, because they have 2 'X' chromosomes, and therefore can have both the orange and black alleles (XO XB)
No, males can be calico because they can have both the alleles for orange and black (XO YB)
Yes because the trait is found on the X chromosome (XOB X)
No, males can be calico because the trait is found on the X chromosome (XOB Y)
Answer explanation
The trait is X-linked so the allele is only found on the X chromosome. Males only have one X chromosome, so can only get one of the color alleles.
XBY or XOY
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
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
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Colorblindness is a recessive X-linked disorder.
Which genotype represents a male with normal vision?
XN YN
Xn Yn
XN Y
Xn Y
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
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