在选择性生性Drosophila的发育过程中出现体积
1Department of Genetics, University of Cambridge, Cambridge, UK. alb84@cam.ac.uk.
Heredity
|November 28, 2023
概括
在Drosophila中,选择性生导致显著的马赛克形,挑战了关于生遗传后代是其母亲的精确复制品的想法. 这种基因组变异是由于在代过程中失去线粒控制而产生的.
科学领域:
- 遗传学 遗传学 是一个
- 发展生物学 发展生物学
- 进化生物学 进化生物学
背景情况:
- 伴生,或没有受精的繁殖,可以涉及大规模的基因组变化.
- 之前的研究表明,基因组的改变,如多化在parthenogenetic动物.
- 随机代的基因组变异程度仍然是活跃的研究领域.
研究的目的:
- 为了研究可选性亲遗传Drosophila的马赛克积症.
- 为了比较帕氏遗传与性繁殖Drosophila的形状水平.
- 为了确定形状是多类动物的可选性生代的一般特征.
主要方法:
- 对Drosophila mercatorum和一个工程Drosophila melanogaster菌株的幼虫大脑的分析.
- 帕氏遗传后代对抗性繁殖后代的体积的比较.
- 评估生殖系衍生和体质动脉积分症.
主要成果:
- 在D. mercatorum菌株中鉴定出一个背景层次的动脉积分症.
- 与性繁殖对应物相比,巴氏基因Drosophila在幼虫大脑中显示出增加的形状.
- 与性后代相比,在帕氏遗传D. melanogaster中,体内积症增加了多达四倍.
结论:
- 德洛索菲拉的选择性生与显著的马赛克无体积症有关.
- 在D. mercatorum中发生代的遗传基础在D. melanogaster中诱导了无体质.
- 由于随后的基因组变异,巴氏遗传后代不一定是他们母亲的确切遗传复制品.
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