18. In humans, hemophilia is inherited as a recessive allele linked to the X chromosome (Xb. Hemophilia is a disorder that results in the failure of blood to clot. A man and a woman who are
both normal clotters have three children named Amy, Harry and Mary. Harry is a hemophiliac,
who has a normal clotting daughter. Mary has normal clotting blood and she has two sons, one
of whom is a hemophiliac. Amy and her five sons are all normal clotters. What are the probable
genotypes for the 2 grandparents, 3 children and 8 grandchildren?
8

List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.

Approximately 90% of all cases of polycystic kidney disease are inherited in an autosomal dominant fashion. the disease is typically related to mutations to genes (pkd1 and pkd2). pkd genes can be found on chromosome 16. the disease occurs in approximately 1: 800 to 1: 1000 people. here is a hypothetical example. the dominant allele d will cause the development of pkd. the recessive allele is known as d. what genotypes would correspond to suffering from pkd? dd, dd what genotypes would correspond to being normal (not suffering from pkd)? dd consider that 1: 1,000 people have pkd in your population of 325million. consider that pkd is inherited in an autosomal dominant fashion. show you math for all of the following questions: what is the genotypic frequency for dd? what is the genotypic frequency for dd? what is the genotypic frequency for dd? what is p? what is q? how many people in your population would have pkd?

Each hereditary trait corresponds to