TRANSITORY HETEROSIS IN NUMBERS OF BASAL BODIES IN TETRAHYMENA PYRIFORMIS

[摘要] The numbers of kinetosomes in ciliary rows on the ventral surface of cells of Tetrahymena pyriformis , syngen 1, are greater by about 10% in young heterozygotes established by crossing two inbred strains than in either homozygote. The difference, apparent at 20 fissions post-fertilization, is essentially gone by 100 fissions. This observation is consistent with a generalized "allelic exclusion" at all loci completed by perhaps 60 fissions after fertilization.

[学科分类] 医学（综合）