NEW
Font size
WorksheetsSex-linked inheritance and pedigrees practice quiz
Total questions: 15
Worksheet time: 29mins
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
What percentage of the female offspring will be a carrier for this recessive disease?
0%
50%
100%
25%
Colorblindness is a sex-linked recessive disorder. A woman with normal vision whose father was colorblind marries a man with normal color vision.
What percentage of their sons will be colorblind?
(Draw a Punnett Square to help figure this out.)
0%
25%
50%
100%
Hemophilia is a sex-linked recessive disorder. A woman with hemophilia marries an unaffected man whose father had hemophilia. What percentage of their daughters will have hemophilia?
(A Punnett Square may help.)
0%
25%
50%
100%
Which genotype represents a female who is a carrier for hemophilia?
Which genotype represents a male with hemophilia?
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)
Which best explains why individual IV-7 has colorblindness?
Because her mom is a carrier and her dad is colorblind.
Because her dad is colorblind.
Because her siblings are colorblind.
Because her uncle is colorblind.
If hemophilia is a sex-linked recessive trait, what genotype would individual III-3 have?
XhX
XhXh
XhYh
XhY
