5. A female of the genotype a b c / + + + (i.e. heterozygous for three genes on the same chromosome) produces 100 meiotic tetrads (100 cells undergoing meiosis, where recombination can occur). Of these 100 tetrads, 68 show no crossover events. Of the remaining 32, 20 show a crossover between a and b, 10 show a crossover between b and c, and 2 show a double crossover between a and b and between b and c. Of the 400 gametes produced, how many of the 8 different genotypes will be produced? Hint: each tetrad showing no crossover will produce two a b c gametes and two + + + gametes. Assuming the gene order a - b - c and given the above mentioned recombination frequencies, what are the map distances between the loci?
3 answers
Hsjsndbskksnsbskkajcb
Died in a fire
30
1 answer