A bacterium of genotype a+b+c+d+ is the donor in a cotransformation mapping. The recipient is a-b-c-d-. Data from the transformed cells is shown below. Which order is consistent with the results?
Table 1
Colonies/plate with cotransformed markers
a+ and b+ 10
a+ and c+1
a+ and d+ 20
b+ and c+ 20
b+ and d+ 3
c+ and d+ 0
Which order is consistent with the results?
a. a c b d b. a d c b c. c b a d d. c a d b