In the fruit fly D. virilis, the mutations dusky body color(dy), cut wings (ct), and white eyes (w) are all recessive alleleslocated on the X chromosome. Females heterozygous for all threemutations were crossed to dy ct w males, and the followingphenotypes were observed among the 500 offspring.
wildtype 18
dusky 153
cut 6
white 76
cut, white 150
dusky, cut 72
dusky, cut, white22
dusky, white 3
14) What are the genotypes of the two maternal X chromosomes,with the genes in the correct order?
a) dy + w / + ct
b) dy + + / + w ct
c) dy w + / + ct
d) dy w ct / + + +
e) + ct + / dy + w
15) What is the recombination frequency between dusky andwhite?
a) 148/500
b) 46/500
c) 43/500
d) 49/500
e) 40/500
PLEASE EXPLAIN!!!! CLEARLY!!!
