Genetics Problems Worksheet With Answers Key Page 5
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62/12/2015
Genetics Problems
H
H or
H
h or
H
*
chance of second born's
ears being pointed (X
X
X
X
X
Y
) = 75%
*
note that gender was not a factor in this problem
"second born" refers to either a boy or a girl that would display this trait
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6. male = XY female = XX
*
chance of baby girl with four arms (
) = 0%
genetic impossibility
*
because the extra arm trait is carried on the Y chromosome & girls don't have Y chromosomes
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F
F
f
*
7. male = X
Y female
= X
X
*
you know Wendy's genotype is hybrid because her dad had mismatching feet
5/6
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