A map (made up) of a dragonfly chromosome is given above (note that distances are in cM). For this
question, w= wingless, w^(+)=normal wings, sp= spotted thorax, sp^(+)=normal thorax
A cross between a fly of genotype w^(+)Wsp^(+)sp and a homozygous recessive fly produces 167 offspring
flies. If the heterozygote parent fly was a coupling heterozygote, which of the following represents the
most probable number of recombinant progeny flies with a given phenotype?
A) 10 wingless flies
B) 20 wingless flies
C) 10 wingless, spotted thorax flies
D) 20 spotted thorax flies
E) 20 wingless, spotted thorax flies
pr
sp
t 7 - 50
34
43
55
A map(made up) of a dragonfly chromosome is given above (note that distances are in cM). For this
question, w = wingless, w* = normal wings, sp = spotted thorax, sp* = normal thorax
A cross between a fly of genotype w*w sp* sp and a homozygous recessive fly produces 167 offspring flies. If the heterozygote parent fly was a coupling heterozygote, which of the following represents the most probable number of recombinant progeny flies with a given phenotype?
A) 10 wingless flies
B) 20 wingless flies
C) 10 wingless,spotted thorax flies
D) 20 spotted thorax flies
E) 20 wingless,spotted thorax flies