211Inheritance2. The pedigree chart below illustrates the inheritance of a trait (darker symbols) in two families joined in marriage.2468.10111213 14II45(a) State whether the trait is dominant or recessive, providing a reason for your choice:(b) State whether the trait is sex-linked or not, providing a reason for your choice:3. The recessive sex-linked gene (h) prolongs the blood-clotting time, resultingin the genetically inherited disease called hemophilia. From the information inthe pedigree chart (right), answer the following questions:Hemophilia in humans(a) If 112 marries a normal man, what is the probability of her first child beinga hemophiliac?1(b) Suppose her first child is actually a hemophiliac. What is the chance thather second child will be a boy with hemophilia?4(c) If 114 has children with a hemophiliac man, what is the probability that her first child will be phenotypically normal?(d) If the mother of 12 was phenotypically normal, what phenotype was her father?4. The phenotypic expression of a dominant gene inAyrshire cattle is a notch in the tips of the ears. Inthe pedigree chart on the right, notched animals arerepresented by the solid symbols.Ear notches in Ayrshire cattleDetermine the probability of notched offspring beingproduced from the following matings:(a) III1 x II13II(b) III3 x II12(c) III3 x II14III(d) III1 x II15

Name: 211Inheritance2. The pedigree chart below illustrates the inheritance
Uploaded: 2024-03-20T06:43:04.000Z
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Description: 211Inheritance2. The pedigree chart below illustrates the inheritance of a trait (darker symbols) in two families joined in marriage.2468.10111213 14II45(a) State whether the trait is dominant or recessive, providing a reason for your choice:(b) Sta