TABLE 3.

Analysis of karyogamy in C. albicans^a

MTLa × MTL α	% Tetraploid	% Diploid
Wild type a × wild type α	63	37
Δkar3/Δkar3a × Δkar3/Δkar3 α	0	100
Δkar3/Δkar3+KAR3a × Δkar3/Δkar3 α	33	67

^aShown are the percentages of tetraploid cells formed following mating crosses between the opaque wild-type (RBY1132 and RBY1132), Δkar3/Δkar3 (RSY12 and RSY11), and Δkar3/Δkar3 strains with the Δkar3/Δkar3+KAR3 (RSY12 and RSY26) strains. Mating zygotes were picked by micromanipulation and analyzed by PCR of the MTL locus as described in Materials and Methods.