Phenotype Number of Progeny virescent 200 purple 237 brown 82 virescent, brown 2
ID: 2446 • Letter: P
Question
Phenotype
Number of Progeny
virescent
200
purple
237
brown
82
virescent, brown
230
virescent, purple
79
purple, brown
195
wild type
42
virescent, purple, brown
44
Which locus appears to be in the middle?
a) pr; b) v; c) bm; d) all threegenes assort independently; e) two of the genes are linked and thethird is on another chromosome.
The distance between the bm and pr gene lociis:
a) 7.8 map units; b) 35.6 map units; c) 42.1 map units; d) 22.3map units; e) none of the above.
The interference value for the above cross is:
a) .097; b) 0.196; c) 0.63; d) 0.80; e) none of the above.
Phenotype
Number of Progeny
virescent
200
purple
237
brown
82
virescent, brown
230
virescent, purple
79
purple, brown
195
wild type
42
virescent, purple, brown
44