Table 6. Comparison of the growth rates of fusants and the MTL-homozygotes that parented fusants.

	Initial				After serial propagation for 100-120 generations
	n	Average growth rate (doublings/hr)	% of fusants with rates higher than rates of both parents/higher than parental average	No. of fusants growing faster than all MTL-homozygotesa	n	Average growth rate (doublings/hr)	% of fusants with rates higher than rates of both parents/higher than parental average	No. of fusants growing faster than all MTL-homozygotesa
YPD at 37°
MTL-homozygotes	9	0.960	n/a	n/a	9	0.972	n/a	n/a
Fusants	34	0.964	32/44	5	34	1.037	47/79	10
Harsh conditions
MTL-homozygotes	8	0.502	n/a	n/a	8	0.481	n/a	n/a
Fusants	11	0.566	27/36	0	11	0.655	82/91	8

^aAll MTL-homozygotes with resistance cassettes, which parented one or several of the fusants tested.