Researchers monitored chromosomes 1 and 2 in two hundred cel

Researchers monitored chromosomes 1 and 2 in two hundred cells (RS/rs) going through meiosis. An analysis of the chromosomes, eventually recovered from the daughter cells, indicated that 138 showed no indication of crossovers; 46 indicated a single crossover event; 12 a double crossover event, and 4 a triple crossover event. What was the average number of crossovers between genes on the recovered chromosomes? (SHOW YOUR WORK)

Solution

total number of crossover genes=genes in single crossover +genes in double crossover +genes in tripple crossover

                                                  =46+12+4=62

genes showing no indication=138

total genes=138+62=200

average number of crossovers=total number of crossover genes/total genes=62/200=0.325