搜尋結果
HomoloGene, a tool of the United States National Center for Biotechnology Information (NCBI), is a system for automated detection of homologs (similarity attributable to descent from a common ancestor) among the annotated genes of several completely sequenced eukaryotic genomes. [1]
- Homology (biology)
Homology (biology) The principle of homology: The ...
- Homology
Chemistry. Other sciences. Mathematics. Other uses. See ...
- Homology (biology)
Homology (biology) The principle of homology: The biological relationships (shown by colours) of the bones in the forelimbs of vertebrates were used by Charles Darwin as an argument in favor of evolution. In biology, homology is similarity due to shared ancestry between a pair of structures or genes in different taxa.
一对同源染色体在 受精 时配对，其中一个来自母方，另一个来自父方，故名稱中的 同源 並非指兩條染色體來自同一名親代（ 同源 的英文 homologous 也有 同型 、 對應 的意思）。 同源染色體在减数第一次分裂（参考 减数分裂 ）的 四分体 时期中彼此 聯會 （若是三倍体及其他奇数倍体生物细胞，联会时会发生紊亂）最后分开到不同的 生殖细胞 （即 精子 、 卵细胞 /极核）的一对 染色体 。 尽管XY染色体仅部分同源，但因其能在减数分裂过程中发生联会，因此一般认为XY染色体也是同源染色体。 不屬于同一對的染色體稱為 非同源染色體 。 形态特征 [ 编辑] 細胞分裂 [ 编辑] 細胞分裂中期出现的长度相同、 着丝点 位置相同的成对的染色体。 减数分裂 [ 编辑]
2024年1月30日 · As previously announced, HomoloGene now automatically redirects to the NCBI Datasets Gene page giving you easy access to up-to-date sequence and homology data. The NCBI Datasets Gene Table provides a link to NCBI Orthologs with expanded gene and
Chemistry. Other sciences. Mathematics. Other uses. See also. Homology. Look up homology, homological, homologous, or homologue in Wiktionary, the free dictionary. Homology may refer to: Sciences. Biology. Homology (biology), any characteristic of biological organisms that is derived from a common ancestor.
Als Homologie ( altgriechisch ὁμολογεῖν homologein „übereinstimmen“) bezeichnet man in der biologischen Systematik und der vergleichenden Anatomie die grundsätzliche Übereinstimmung von Organen, Organsystemen, Körperstrukturen, physiologischen Prozessen oder Verhaltensweisen zweier Taxa aufgrund ihres gemeinsamen evolutionären Ursprungs.
Homologous recombination is a type of genetic recombination in which genetic information is exchanged between two similar or identical molecules of double-stranded or single-stranded nucleic acids (usually DNA as in cellular organisms but may be also RNA in viruses ).
