Braggart
发表于 2025-3-21 19:36:03
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instulate
发表于 2025-3-21 23:12:34
Another Case of Unequal Crossing Over in Bar. This behavior was shown by Sturtevant to result from unequal crossing over. The Bar-reverted type was considered to be a deficiency for the Bar gene; while the extreme form, called Ultra-Bar or Double-Bar, was interpreted as a duplication for that gene. Later, Wright suggested that Bar itself h
杂色
发表于 2025-3-22 02:49:47
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香料
发表于 2025-3-22 08:26:28
The pseudoallelism of white and apricot in es, namely, that it is made up of “pseudoalleles,” or closely linked genes with similar effects, has usually been considered ruled out by two kinds of evidence. In the first place early attempts to resolve the series by crossing over failed in spite of numerous tests involving most of the mutants av
GRE
发表于 2025-3-22 10:41:35
Pseudoallelism and Gene Evolutionts, may provide clues to the mode of origin of new kinds of genes. Our underlying thesis will be that in those instances of pseudoallelism in which there is evidence for close functional similarity among the component genes we may come close to seeing the direct results of a process which produces n
abnegate
发表于 2025-3-22 16:40:50
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abnegate
发表于 2025-3-22 20:45:50
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牵连
发表于 2025-3-22 22:12:52
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无畏
发表于 2025-3-23 03:56:50
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沉着
发表于 2025-3-23 07:11:54
Genetic Control of Body Segment Differentiation in Drosophilathese gradually diverge in morphology until the extensive differentiation of body segments seen in the adult is achieved. The genetic control of this divergence is, by now, moderately well understood. The differentiation of the third thoracic and of all abdominal segments appears to be under the con