1. In Drosophila, a kidney-shaped eye is produced by a recessive gene k on the third chromosome. Recessive genes for a bright red-orange eye color, called cardinal (cd) and for ebony body color (eb) are located on the same chromosome. A pure breeding ebony bodied male with normal eye color (cd+) and shape (k+) was mated to a pure breeding kidney, cardinal female with normal body color (eb+). All F1 generation flies were completely wild type with normal body color, eye color, and eye shape. A female from the F1 generation was then test-crossed with a kidney, cardinal, ebony male.

There were 1998 offspring. Note that is a trait is not mentioned in the phenotype column, it is understood to be the wild type trait. Ex, the offspring in row one have kidney, cardinal eyes and normal body color.
phenotype phenotype (allele) # offspring
kidney, cardinal 883
ebony 887
kidney, ebony 64
cardinal 67
kidney 49
ebony, cardinal 44
kidney, cardinal, ebony 1
wild type 3

A. Which offspring have parental phenotypes?

B. Which offspring resulted from double crossovers?

C. Which gene is located in the middle locus?

D. Which offspring resulted from single crossovers between the k and eb loci?

E. Which offspring resulted from single crossovers between the cd and eb loci?

F. What is the map distance between k and eb?

G. What is the map distance between eb and cd?

H. What is the map distance between k and cd?

I. Draw the chromosomes found in the F1 female used for the test cross. Include both the gene order and the map distances between the alleles.