The fruit fly drosophila melanogaster has a haploid chromosome number of n = 4, and 2n = 8. chromosome iv in this species is a tiny autosome. flies trisomic for chromosome iv are fertile and have no apparent defects. the eyeless (ey) and gawky (gw) loci are tightly linked on chromosome iv. loss-of-function ey− and gw− alleles are recessive to ey and gw, respectively. flies homozygous for ey− lack eyes, and flies homozygous for gw− have disrupted circadian rhythms. consider a male fly trisomic for chromosome iv, with each of the three chromosome copies bearing different allele combinations for these two loci: if this trisomic fly is the progeny of a male fly of genotype (ey+ ey−, gw+ gw−) crossed to a female fly with genotype (ey− ey−, gw− gw−), what can you conclude about the events that led to its formation? (3 points) a. nondisjunction occurred in the female parent at the meiosis i division to produce an (n+1) egg that fused with a normal (n) sperm. b. nondisjunction occurred in the male parent at the meiosis ii division to produce an (n+1) sperm that fused with a normal (n) egg. c. nondisjunction occurred in the female parent at the meiosis ii division to produce an (n+1) egg that fused with a normal (n) sperm. d. nondisjunction occurred in the male parent at the meiosis i division to produce an (n+1) sperm that fused with a normal (n) egg.