You want to test whether a particular allele of the interferon gene (the a3 allele) is responsible for an immune deficiency disease. Using an assay for a restriction fragment polymorphism present in the a3 allele and absent in other interferon alleles, you have mapped the inheritance of the a3 allele […]

There are four paris of chromosomes in Drosophila: the sexchromosomes (XX in females and XY in males) and three pairs ofautosomes. You are studying a new mutant strain with greeneyes. You want to know if green eye color is a dominantmutation and on which chromosome the green eye locus can […]

A 47 year old teacher goes to her physician complaining of dizziness, fainting, and shortness of breath. She appears pale and chronically ill. Her heart rate is 70/min supine and 68/min sitting and standing. Her blood pressure is 120/74 supine, 98/54 sitting, and 84/48 standing. Heart sounds and lung sounds […]

A mutation has occurred in an animal population so that the homozygous recessive condition (ff) results in a fatal disease for the animal. Affected individuals die soon after birth. The homozygous dominant (FF) and the heterozygous (Ff) individuals live normally. A study of the population over one year found that […]