Complementation tests of the recessive mutant genes a throug

Complementation tests of the recessive mutant genes a through f produced the data in the accompanying matrix. The X\'s represent missing data. Assuming that all of the missing mutant combinations would yield data consistent with the entries that are known, complete the table by changing each X to a + or - as needed.

Solution

COMPLEMENTATION TESTS OF THE RECESSIVE MUTANT GENES:

   a b c d e f

a - + - + + +

b - + + + -

c + - + +

d - + -

e - +

f -