一对紧密连锁的基因控制果蝇前胸背板刚毛数的增加。
A pair of closely linked genes controlling high scutellar chaeta number in Drosophila.
机构信息
Department of Genetics and Human Variation, La Trobe University, Victoria, Australia.
出版信息
Theor Appl Genet. 1971 Jan;41(5):227-35. doi: 10.1007/BF00279774.
PMID:24430248
Abstract
- A line selected for high scutellar chaeta number reached a mean of about 16 chaetae in females and 13.5 in males at the 69th generation of selection following an accelerated response to selection which commenced at generation 65 and added five chaetae. 2. The accelerated response can probably be explained in terms of two recessive high chaeta number genes 1.05 cM apart, and which are located between po and vg on chromosome II. The gene closest to vg was found to be scabrous, sca, which causes rough eyes when homozygous and has a pleiotropic effect on scutellar chaeta number. The gene was found in one of the strains used in setting up the selection lines. 3. The results are discussed in relation to other theories of control of the scutellar chaeta system.
摘要
在经过 65 代加速选择（从第 65 代开始，每次增加 5 个刚毛）后，选择一条刚毛数较高的品系，在第 69 代的选择中，雌蝇的平均刚毛数达到 16 根，雄蝇达到 13.5 根。
这种加速反应可能可以用两个相距 1.05cM 的隐性高刚毛数基因来解释，这两个基因位于 II 号染色体上的 po 和 vg 之间。靠近 vg 的基因是粗糙(scabrous)，sca，当纯合时会导致眼睛粗糙，并且对前胸刚毛数有多种效应。该基因存在于建立选择系的一个品系中。
结果与其他前胸刚毛系统控制理论进行了讨论。
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