不对称和平行亚基因组选择共同形成常见鱼化
Min Wang1,2, Xinxin Li1, Chongnv Wang1
1Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
BMC biology
|January 3, 2024
概括
常见的鱼化受益于多体化,选择性繁殖揭示了诸如缩小和生长等特征的独特遗传变异. 这表明多体性为动物化和改进提供了优势.
科学领域:
- 基因组学就是基因组学.
- 动物繁殖 动物繁殖
- 水产养殖是水产养殖的一种方式.
背景情况:
- 常见的鱼 (Cyprinus carpio) 是养的全聚类动物的典范.
- 亚基因组分歧对于全聚类化至关重要,但其与鱼的农学特征的联系尚不清楚.
研究的目的:
- 研究与普通鱼的关键化特征相关的全基因组遗传变异.
- 识别用于减肥,活皮肤颜色和高生长率的候选基因.
- 探索亚基因组分歧在普通鱼选择性繁殖中的作用.
主要方法:
- 利用了13种常见鱼菌株的全面SNP数据集.
- 分析了与缩,鲜的皮肤颜色和高生长率相关的遗传变异.
- 检查了亚基因组选择模式 (不对称与平行) 和基因表达差异.
主要成果:
- 在养的常见鱼中确定了可取的农学特征的新型候选基因.
- 证明了类似的特征可以从不同的遗传变异中产生,突出显示了多倍体优势.
- 在免疫系统中发现了候选基因的丰富,这表明在化过程中疾病抵抗力得到了改善.
- 在化中观察到不对称的亚基因组选择和在选择性繁殖中观察到平行亚基因组选择.
结论:
- 普通鱼的化涉及不对称的亚基因组选择,而选择性繁殖则显示平行亚基因组选择.
- 通过可转移元素介导的表达分歧来减少类型可能解释选择模式.
- 多重积分为动物化提供了显著的好处,类似于它在植物中的作用.
相关概念视频
01:21Frequency-dependent Selection
22.0K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
22.0K
02:05Gene Evolution - Fast or Slow?
7.1K
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
7.1K