関連する実験動画
Updated: Jul 14, 2026

07:13
Measuring Active and Passive Tameness Separately in Mice
Published on: August 10, 2018
ネコの飼い主の近東の起源
Carlos A Driscoll1, Marilyn Menotti-Raymond, Alfred L Roca
1Laboratory of Genomic Diversity, National Cancer Institute, Frederick, MD 21702, USA. driscoll@ncifcrf.gov
まとめ
飼い猫は近東に起源があり,おそらく初期の農業の頃のことです. 979匹の猫と野生の親類の遺伝子解析は,独特の野生亜種と,家畜の猫集団の複数の創始者を明らかにしています.
科学分野:
- 遺伝学 遺伝学とは
- 動物学 動物学
- 考古学考古学とは
背景:
- 飼い猫は,その進化史と品種発展を反映した遺伝的変異を示しています.
- 猫の家畜化を理解することは,人間と動物の相互作用と初期の農業社会についての洞察を提供します.
研究 の 目的:
- 飼い猫とその野生の祖先を遺伝子的に評価し,Felis catus.の起源と拡散を明らかにする.
- 野生ネコ (Felis silvestris) の異なる亜種を特定し,家畜ネコとの関係性を決定する.
主な方法:
- 979匹の飼い猫の全ゲノム解析と解析を行いました.
- Felis silvestrisの5つの異なる亜種であるF. s. silvestris,F. s. lybica,F. s. ornata,F. s. cafra,およびF. s. bieti. を用いた比較遺伝分析を行いました.
主要な成果:
- 各野生の群れは,それぞれ異なるFelis silvestris亜種であると確認されました.
- 遺伝的証拠は,近東で家畜化が起きており,肥沃な半月の農業開発と一致していることを示しています.
- 飼い猫の祖先は,少なくとも5人の近東の祖先にたどり着くが,その後の地球規模での拡散は,人間の移住によって促進された.
結論:
- この研究は,野良猫の亜種分類と,飼い猫との関係性を明確にしています.
- この発見は,ネコの家畜化の中心地として近東を特定し,初期の農業社会と結びついている.
- 飼い猫は,人間の代理人によって世界中に広がる複数の系統を含む複雑な設立の歴史を持っています.
関連する概念動画
Incomplete Dominance
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
Synteny and Evolution
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 chromosome underwent...
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral chromosome underwent...
X-Inactivation
The human X chromosome contains over ten times the number of genes as in the Y chromosome. Since males have only one X chromosome, and females have two, one might expect females to produce twice as many of the proteins, with undesirable results.
Catenins
Catenins are characterized by multiple binding domains and dynamic structures that allow them to function as linker proteins in cell junction complexes. All catenins, except α-catenin, contain a characteristic protein sequence called the armadillo repeat and are therefore also called armadillo proteins.
Catenins in Cell Junctions
Catenins bind to cell adhesion molecules such as cadherins and link them to different cytoskeletal proteins depending on the type of cell junction. At the adherens...
Catenins in Cell Junctions
Catenins bind to cell adhesion molecules such as cadherins and link them to different cytoskeletal proteins depending on the type of cell junction. At the adherens...
Convergent Evolution
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.The structures that arise from convergent evolution are called analogous structures. They are similar in function even if they are dissimilar in structure. Further, structures can be analogous while also...
Epistasis
In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...
