Rupert has discovered a new eye color in Drosophila and decidedto call this extremely bright eye “hot tamale”. To find out if thisgene is on chromosome 2 he did a testcross of a heterozygous femaleto a male that is apterus (ap, chromosome 2), black (b, chromosome2), and hot tamale (ht). The following progeny resulted.
+ + + 41 ap ht +301
+ ht + 34 ap + + 307
+ + b 305 ap + b 46
+ ht b 300 ap ht b 36
a. (2 pts) Diagram this cross (using the correct gene order andcoupling):
b. (2 pts) Identify the progeny as Parentals (P), recombinant(R), region 1 crossover (R1), region 2 crossover (R2), or doublecrossover (dco) as appropriate (you may not use all of thesedesignations!)
c. (2 pts) Determine the map distance between all linkedgenes.
d. (4 pts) What gamete types would Rupert have seen if hecrossed a heterozygous male to a homozygous recessive female? Usethe inverse of the cross in part a as an example and bespecific.
e. (6 pts) Would Rupert have been able to determine if the genesare linked or unlinked if he had used the cross suggested in partd? Set up the experiment by comparing the cross in part d with across in which all three genes are linked and provide specificevidence.