在callitrichid灵长类灵长类的SLC6A4位点上,与威胁反应相关的多形态的演变
Hanlu Twyman1, India Heywood1, Marília Barros2
1Department of Zoology, Downing Street , Cambridge CB2 3EJ, UK.
Biology letters
|July 16, 2024
概括
血清素转运基因 (SLC6A4) 是一种近期的进化起源,用于常见的海的焦虑相关行为. 这种与焦虑相关的SLC6A4多态可能通过某些灵长类动物的高生态适应性来维持.
科学领域:
- 进化生物学是进化的生物学.
- 行为遗传学行为遗传学
- 灵长类动物基因组学
背景情况:
- 血清素转运基因 (SLC6A4) 影响灵长类动物与焦虑相关的行为.
- 在SLC6A4中的多态性与的生态适应性有关.
- 松鼠中SLC6A4变异的进化历史在很大程度上仍未被探索.
研究的目的:
- 为了调查SLC6A4多态的进化起源,与焦虑相关的行为在常见的海 (Callithrix jacchus).
- 为了检查callitrichid灵长类动物中SLC6A4重复区域的变异程度.
- 了解SLC6A4功能变异在行为和适应性方面的进化意义.
主要方法:
- 调查了callitrichid灵长类的八个属内的14个物种的SLC6A4重复区域变异.
- 分析了普通海及其姐妹物种黑色耳海的序列多态性.
- 在研究的灵长类物种中比较了种内特异性变异模式.
主要成果:
- 在SLC6A4重复次数 (从24到43) 中发现了显著的跨种类变异.
- 观察到类似于普通海的黑色耳海的序列多态性.
- 在其他研究的物种中,没有发现这些SLC6A4位点的物种内变异.
结论:
- 功能性SLC6A4多态性与普通海的焦虑有关,其近期的进化起源.
- 在SLC6A4位点的与焦虑相关的等位基因是从进化过程中衍生出来的,在常见的鱼中.
- 巨和的高生态适应性和行为灵活性可能有助于维持SLC6A4多态.
更多相关视频
09:34Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
33.7K
06:25Analysis of Simian Immunodeficiency Virus-specific CD8+ T-cells in Rhesus Macaques by Peptide-MHC-I Tetramer Staining
Published on: December 23, 2016
9.2K
相关概念视频
Synteny and Evolution
3.2K
John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
3.2K
Gene Duplication and Divergence
6.1K
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...
6.1K
Exon Recombination
3.6K
The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes.
Exon shuffling follows “splice frame rules.” Each exon...
Exon shuffling follows “splice frame rules.” Each exon...
3.6K
Convergent Evolution
27.7K
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.
27.7K
Single Nucleotide Polymorphisms-SNPs
15.0K
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
15.0K
Frequency-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
