A couple has three girls, the last of whom is affected with cystic fibrosis. The first-born daughter marries her first cousin-that is, the son of her mother's sister-and they have a son with cystic fibrosis. The father has a female cousin with cystic fibrosis on his mother's side. Which of the following pedigree diagrams best represents this family history?
click image to enlarge
A. Diagram A
B. Diagram B
C. Diagram C
D. Diagram D
E. Diagram E
F. Diagram F
G. Diagram G
H. Diagram H
It is important that the pedigree be an accurate reflection of the family history and that information not be recorded unless specifically mentioned. Pedigree B in the figure omits the double line needed to indicate consanguinity, and pedigree C assumes that the father's affected cousin is the offspring of his uncle rather than being unspecified. Pedigree F correctly illustrates the birth order (third) of the affected female (indicated by arrow) and the consanguinity (double line) represented by the first-cousin marriage.
hey thanks , but can you explain biochem2.doc Q#2, glycogen synthetase is in cytosol .... shouldn't it be the left over enzyme after removal of all organelles ?
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