Biology

Conrad Barr

28 July, 11:15

Polydactyl, having extra fingers or toes, is an autosomal dominant disorder that occurs in cats as well as in humans. A cat breeder collects information about her cats and makes the pedigree below.

If the breeder wants to select a mother cat to produce a litter oof kittens without polydactyl which cat could she choose?

A: cat 2 or 9

B: cat 3 or 6

C: cat 4 or 5

D: cat 6 or 8