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Guest
DRAWING CONCLUSIONS Follow the directions given below
(on my worksheet there are squares and circles. the squares are the males and the circles are the females)
Complete the pedigree below based on the information given in a. You may have to add shading and symbols to the diagram. Then follow the directions in b and c.
a.) Cystic fibrosis is caused by a single-allele recessive trait.
o A husband and wife both have parents who are heterozygous for cystic fibrosis.
o The husband and wife are also heterozygous for that trait.
o Their son has cystic fibrosis.
o Their 2nd child, a daughter, is normal for the trait.
o Their 3rd child, another daughter, is a carrier for the trait.
b.) Draw a key or the completed pedigree.
c.) Predict the possible phenotypes of a child born to the F2 son if the son marries a woman who does not carry the cystic-fibrosis trait.
(on my worksheet there are squares and circles. the squares are the males and the circles are the females)
Complete the pedigree below based on the information given in a. You may have to add shading and symbols to the diagram. Then follow the directions in b and c.
a.) Cystic fibrosis is caused by a single-allele recessive trait.
o A husband and wife both have parents who are heterozygous for cystic fibrosis.
o The husband and wife are also heterozygous for that trait.
o Their son has cystic fibrosis.
o Their 2nd child, a daughter, is normal for the trait.
o Their 3rd child, another daughter, is a carrier for the trait.
b.) Draw a key or the completed pedigree.
c.) Predict the possible phenotypes of a child born to the F2 son if the son marries a woman who does not carry the cystic-fibrosis trait.