Biology Homework

APA formatting and only Primary library resources

a) Bioethical Issue in Genetics 300 words Max APA writing style format and Referencing style

b) Sickle cell anemia (a Bleeders disease where the blood would not clot properly and the individual will eventually die from this disorder). This gene is found in malaria-infected areas of the world and is inherited as follows:

Hb-S /Hb-S ---sickle cell anemia

Hb-S/ Hb-A ---Sickle cell trait and resistant to malaria

Hb-A /Hb-A --- Nonsickling (normal) but susceptible to malaria

Discuss the inheritance pattern and how this gene stays in the infected malaria environment?

(c) A gene for determining maleness (Y determining factor) is found only on the Y chromosome of human males (where XX is a female and XY is a male). What would be the sexual phenotype of an XXY (47 instead of a normal 46 chromosomes)? Discuss how you came to your conclusion regarding the phenotype.

(d) Red-green blindness in humans is a sex-linked (X chromosome) recessive trait. How would you explain how a young man who is red-green blind has two parents who have a normal color vision (provide genotypes with the phenotypes)?