融合进化和基因复制数的可预测性与哺乳动物的饮食相关
Kayla Wilhoit1,2,3, Shun Yamanouchi4, Bo-Jyun Chen1,5
1Ecological Genetics Laboratory, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan.
Genome biology and evolution
|January 24, 2025
概括
哺乳动物的基因拷贝数变化与饮食相关,可能允许从基因组数据中预测食量生态. 这项研究揭示了融合进化和基因重复事件之间的联系.
科学领域:
- 进化生物学 进化生物学
- 基因组学就是基因组学.
- 生态生态学 生态生态学
背景情况:
- 融合进化描述了不同血统中类似特征的独立进化.
- 虽然氨基酸变化是已知的驱动因素,但基因拷贝数变异在融合进化中的作用不太清楚.
- 了解适应的遗传基础可以帮助预测生物的表型和生态能力.
研究的目的:
- 为了研究基因拷贝数变化和哺乳动物的饮食变化之间的联系.
- 为了确定是否可以从基因家族拷贝数来预测食物群生态.
- 探索基因重复对融合进化的贡献.
主要方法:
- 分析了86个哺乳动物基因组序列.
- 鉴定了基因家族,通过基因修正显示了饮食群体 (食草动物,食肉动物,食肉动物) 的复制数趋势.
- 开发了基于基因拷贝数的区分函数来预测食物营养生态.
主要成果:
- 确定了24个基因家族,与哺乳动物饮食相关的副本数变异.
- 已确认已知的基因家族 (如粉酶,嗅觉受体) 和发现与饮食相关的新型基因家族.
- 杂食动物对调节翻译的基因拷贝数量增加.
- 使用13个基因家族的区分函数,可以准确地预测食物圈生态.
结论:
- 基因拷贝数的变化与哺乳动物的饮食适应有关,这表明基因在融合进化中的作用.
- 基因组序列数据,特别是基因拷贝数,可能为推断动物生态学提供一种预测方法.
- 这项研究为通过基因组分析了解适应性进化开辟了道路.
更多相关视频
相关概念视频
Gene Duplication and Divergence
6.0K
The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are...
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are...
6.0K
Convergent Evolution
27.4K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
27.4K
Gene Families
8.7K
Gene families consist of groups of genes proposed to have originated from a common ancestor. Typically these arise through events in which a gene or genes are mistakenly duplicated during cell division. Unlike their parent genes (which are subject to selection pressure to maintain function), these gene copies do not need to preserve their sequences and may evolve at a relatively faster rate.
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
8.7K
Gene Evolution - Fast or Slow?
7.0K
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...
7.0K
Evolutionary Relationships through Genome Comparisons
5.7K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
5.7K
Comparing Copy Number Variations and SNPs
17.1K
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
17.1K


