Question

genetics! please help!

The four-spotted cowpea weevil can be red, black, white or tan and is the result of four alleles that express a dominance hierarchy (R>R (Rb) >RW Rw)> r) (red>black>white>tan) at a single gene locus. Color variation in this species is sex-limited to females: males carry the color genes but are always tan regardless of their genotype. For each of the following crosses give all possible genotypes of the parents. F=females M=males Show your work on your scratch paper for full credit. Parents: black F xtan M Progeny: 151 red F, 49 black F, 61 tan F, 249 tan M [Choose] Parents: white F x tan M Progeny: 32 red F, 31 tan M [Choose) Parents: black F xtan M Progeny: 3586 black F, 1282 tan F, 4791 tan M [Choose] Parents: black F x tan M Progeny: 88 black F, 88 tan F. 186 tan M [Choose]

Answer 1

4 Parents Black fx tan 5 88 black of 88 ran f, 186 lan Progeny 8 contams traine e or contain given parents Female mother is black and the progeny tan colored indwiduals then both parents must be neverozygous Tree at least 1 recessive allele. The genotypes of be Rb But the ratio es R bRb Rbg Rb Rbo Rr salisfied with the Rbr rr second cropp which Rb Rb : Rborr Rbrrr X rr 1 ! 2! 1 1 1 Black Black tan 7 Rb ४ 88 bo Black : tan