This is a genetics course. Question 3 and 4 need to both be
answered.

3. Across is made between two coli strains: Hfr arg bio leu’ X F arg bio leu. Interrupted mating studies show that arg enters the recipient last, so arg recombinants are selected on a medium containing bio and leu only. These recombinants are tested for the presence of bio and leu’. The following numbers of individuals are found for each genotype arg bio leu 320 arg bio leu arg bio leu arg bio leu a) What is the order of the three markers? b) Construct a map for the three loci indicated above. Be sure to show the distances between the three markers. 4. In peas (Pisum sativum), the genetic map of chromosome 7 is as follows, where w, s, and e represent mutant alleles affecting the color and shape of the seeds: 8 m. u 14 m. u. Assuming the following cross is made W Se What proportion of the progeny will be off the following phenotypes (assuming there is no interference): W SE w SE