evidence is presented that no or little loss occurs in spores with one b and that the rate is not increased in spores with more than two b's.-the b chromosomes from an unrelated strain proved as effective in inducing loss as did the b 's of the original high loss stock.-chromatin loss induced by b 's is restricted to knobbed a chromosomes and occurs only at the second microspore division .
C0008546
chromatin
C0008633
chromosomes