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Unformatted text preview: ait for his son to get the trait.
Also true. X-linked traits can never be passed from father to son,
while the father MUST be a carrier for his son to inherit an
autosomal recessive trait. Question 3
The pedigree of an autosomal recessive trait differs from the pedigree
of an X-linked recessive trait for all of the following reasons except:
Pedigrees of X-linked recessive traits will have equal
frequencies of affected males and females, whereas pedigrees of
autosomal recessive traits will show mostly affected males.
NOT true. X-linked recessive traits show mostly affected males,
while autosomal traits (whether dominant or recessive) affect both
(This also eliminates “d”, as all of the above are not correct....) Question 5
• The following is a pedigree for Myotonic Dystrophy Type 1 (MD-1), which is an autosomal dominant disease leading to muscle degeneration. Given the data in
the pedigree, what is the estimated penetrance of MD-1? Question 5
• Remember, you can only use INFORMATIVE meioses - you have to know w...
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- Fall '14