Name ________________________ pd _____________
Name ________________________ pd _____________
Lactose is a sugar found in milk.
The recessive allele cause lactose intolerance
Lactose is a sugar found in milk.
The recessive allele cause lactose intolerance
The dominant allele for the digestion of lactose = E
The recessive allele for lactose intolerance = e
The dominant allele for the digestion of lactose = E
The recessive allele for lactose intolerance = e
A man who is heterozygous for lactose digestion has children with
a woman who has lactose intolerance.
A man who is heterozygous for lactose digestion has children with
a woman who has lactose intolerance.
1) Complete the Punnett Square below to show the predicted
outcome of the offspring. (4 pts.)
1) Complete the Punnett Square below to show the predicted
outcome of the offspring. (4 pts.)
Genotypes
Dad = ______
Mom = ______
E
e
E
e
Genotypes
Dad = ______
e
e
Mom = ______
e
e
2) What is chance one of their children will have lactose
intolerance. (1 pt.)
____________%
2) What is chance one of their children will have lactose
intolerance. (1 pt.)
____________%
3) The couple had six children, but only one of the six was lactose
intolerance. Explain how it is possible that only one child has
lactose intolerance. Use complete sentences to answer. (3 pts.)
3) The couple had six children, but only one of the six was lactose
intolerance. Explain how it is possible that only one child has
lactose intolerance. Use complete sentences to answer. (3 pts.)
Explanation:
Explanation:
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