Lec5PracProb

Lec5PracProb - Prac3ce
Problem
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Unformatted text preview: Prac3ce
Problem
 Assume
that
a*ached
earlobes
are
an
autosomal
recessive
trait
 with
73%
penetrance.

If
one
parent
is
heterozygous
(Aa)
 and
the
other
homozygous
recessive
(aa)
for
the
a*ached
 earlobe
gene,
what
is
the
probability
that
their
first
child
 will
have
a*ached
earlobes?
 a.  50%
 b.  18.75%
 c.  25%
 d.  36.5%
 e.  73%
 Prac3ce
Problem
 A
child
who
is
blood
type
A
has
a
mother
who
is
blood
 type
B.
In
a
paternity
suit
a
man
is
accused
of
being
the
 father.
He
has
blood
type
AB.
Is
he
the
father?
 a. 
Yes
 b. 
No
 c. 
He
cannot
be
excluded
as
the
father.
 d. 
There
is
a
12.5%
chance
that
he
is
the
father.
 ...
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