AN ANALYSIS OF NUCLEAR DIFFERENTIATION IN THE SELFERS OF TETRAHYMENA
AN ANALYSIS OF NUCLEAR DIFFERENTIATION IN THE SELFERS OF TETRAHYMENA
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DOI：
10.1086/282022
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发表时间：
1958-01-01
影响因子：
2.9
通讯作者：
NANNEY, DL
中科院分区：
文献类型：
--
作者：
ALLEN, SL;NANNEY, DL
本文研究了T.梨形肌的形态学特征有定性和定量两个方面。在这些克隆中经常发现交配型的双重关联，并且产生对于其中一种交配型而言是纯的细胞。从不稳定的克隆中产生两种类型的纯细胞的速率，虽然最初不同，但在100次或更多次分裂后变得相似。然而，这两个比率之和达到早期均衡。这些属性被解释的假设，分离的稳定和分化的大核元素（亚核）发生在营养繁殖。SCHENSTED的随附论文为精确评估这种解释提供了数学基础，一般来说，数学模型和实验结果非常吻合。新分裂的细胞中二倍体亚核的总数估计为45。
Properties of certain unstable clones (selfers) of Family A, variety 1, of T. pyriformis are described in qualitative and quantiative terms. Dual associations of mating types are frequently found in these clones, and cells, pure for one of the mating types, are produced. The rates of production of the 2 types of pure cells from unstable clones, although initially dissimilar, become similar after 100 or more fissions. The sum of the 2 rates, however, comes to an early equilibrium. These properties are interpreted on the assumption that segregation of stable and differentiated macronuclear elements (sub-nuclei) occurs during vegetative reproduction. The accompanying paper by SCHENSTED provides the mathematical basis for evaluating this interpretation precisely, and, in general, the mathematical model and the experimental results are in excellent agreement. The total number of diploid sub-nuclei in a newly divided cell is estimated at 45.