Biology, 22.01.2021 08:10 cheyennerondeau
4. In humans, phenylketonuria (PKU) is caused by a recessive yene, people with this allele have a defective
enzyme and cannot break down the amino acid phenylalanine. This disease can result in severe
developmental delays or death. Let "E" represent the normal enzyme. Also in humans is a condition
called galactose intolerance (galactosemia), which is also caused by a recessive allele, let "G" represent
the normal allele for galactose digestion. In both diseases, normal dominates recessive. If two adults
were heterozygous for both traits, what is the probability of having a child
a that has just PKU?
b. that has both diseases?
C that has just galactosemia?
d that is completely normal?
e that is a carrier of both traits?
Answers: 3
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