英国胡蝶的工业黑色素有着独特的和最近的突变起源
Arjen E van't Hof1, Nicola Edmonds, Martina Dalíková
1Institute of Integrative Biology, University of Liverpool, Liverpool, UK.
Science (New York, N.Y.)
|April 16, 2011
概括
胡蝶的遗传基础是胡蝶.
科学领域:
- 进化生物学 进化生物学
- 遗传学 是一个遗传学.
- 昆虫学 昆虫学是一门学科.
背景情况:
- 胡蝶 (Biston betularia) 是自然选择的一个经典例子.
- 在19世纪的英国,黑色碳菌的快速传播证明了环境对适应的影响.
- 这种颜色变异的特定遗传基础仍然未被确定.
研究的目的:
- 为了确定负责碳菌在胡蝶的变形的基因突变.
- 了解快速形态适应环境变化的遗传基础.
主要方法:
- 碳化物形态的遗传映射.
- 将映射区域与丝虫染色体段进行比较.
- 在已识别的遗传区域内对序列变异的分析.
主要成果:
- 碳菌的形态被遗传地图绘制为200基基区域.
- 这一区域与丝虫染色体17的片段相对应.
- 确定了一种与碳素菌形态相关的单核序列变异,显示出强烈的近期选择.
结论:
- 胡蝶的碳素菌形态的遗传基础已经被阐明.
- 确定的区域包含一个关键的遗传变异驱动快速适应.
- 这一区域可能含有Lepidoptera中保存的基底色彩模式调节器.
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