Q1. In Drosophila, vestigial (partial formed) wings (vg) are recessive to normal long wings (vg+), and the gene for this trait is autosomal. The gene for the white eye trait is on the X chromosome. Suppose a homozygous white-eyed, long-winged female fly is crossed with a homozygous red-eyed, vestigial-winged male.

A. What will be genotypes and phenotypes of F1?

B. What will be genotypes and phenotypes of F2?

C. What will be genotypes and phenotypes of a cross of F1 back to each parent?

F1 back to each parent?

Q2. While using ICD-9-CM codes, there are four main steps that should be followed to make sure that the code is an accurate description of the diagnosis. Using Library and other outside references list and describe the four steps essential to establish the proper ICD-9-CM code.