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homology    
n. 相同,异体同形,同族关系

相同,异体同形,同族关系

homology
透射

homology
n 1: the quality of being similar or corresponding in position
or value or structure or function

Homology \Ho*mol"o*gy\, n. [Gr. ? agreement. See {Homologous}.]
1. The quality of being homologous; correspondence; relation;
as, the homologyof similar polygons.
[1913 Webster]

2. (Biol.) Correspondence or relation in type of structure in
contradistinction to similarity of function; as, the
relation in structure between the leg and arm of a man; or
that between the arm of a man, the fore leg of a horse,
the wing of a bird, and the fin of a fish, all these
organs being modifications of one type of structure.
[1913 Webster]

Note: Homology indicates genetic relationship, and according
to Haeckel special homology should be defined in terms
of identity of embryonic origin. See {Homotypy}, and
{Homogeny}.
[1913 Webster]

3. (Chem.) The correspondence or resemblance of substances
belonging to the same type or series; a similarity of
composition varying by a small, regular difference, and
usually attended by a regular variation in physical
properties; as, there is an homology between methane,
{CH4}, ethane, {C2H6}, propane, {C3H8}, etc., all members
of the paraffin series. In an extended sense, the term is
applied to the relation between chemical elements of the
same group; as, chlorine, bromine, and iodine are said to
be in homology with each other. Cf. {Heterology}.
[1913 Webster]

{General homology} (Biol.), the higher relation which a
series of parts, or a single part, bears to the
fundamental or general type on which the group is
constituted. --Owen.

{Serial homology} (Biol.), representative or repetitive
relation in the segments of the same organism, -- as in
the lobster, where the parts follow each other in a
straight line or series. --Owen. See {Homotypy}.

{Special homology} (Biol.), the correspondence of a part or
organ with those of a different animal, as determined by
relative position and connection. --Owen.
[1913 Webster]


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  • Homology (biology) - Wikipedia
    Homology among proteins or DNA is inferred from their sequence similarity Significant similarity is strong evidence that two sequences are related by divergent evolution from a common ancestor
  • homology_百度百科
    Homology是源自希腊语的英语名词,音标为英式 [hɒ'mɒlədʒɪ] 美式 [hoʊ'mɒlədʒɪ],意为事物间基于共同起源或结构功能的关联性,涵盖同源、异体同形及同族关系等义项,主要作为名词使用。
  • 深入理解生物学中的同源(homologous, homologue)、直系同源(orthologous, orthologue)和旁系同源 . . .
    在生物学、遗传学、生物化学、生物信息学、化学、发育生物学、胚胎学、解剖学,甚至心理学、数学、社会学等课程的学习过程中,可能会遇到同源(homologous, homologue, homolog, homology)、旁系同源(paralogous…
  • homology - 搜索 词典
    必应词典为您提供homology的释义,美 [hoʊ'mɒlədʒɪ],英 [hɒ'mɒlədʒɪ],n 同调;【数】透射;【生】同源;【化】同系 (现象); 网络释义: 同源性;同种性;相似性;
  • Homology | Morphology, Comparative Anatomy Genetics | Britannica
    homology, in biology, similarity of the structure, physiology, or development of different species of organisms based upon their descent from a common evolutionary ancestor
  • 同源性 (homology)相关概念 - 生信技工
    解释了同源性 (homology)在进化生物学应用的相关概念,包括homolog,ortholog,paralog,xenolog,analog,orthology,orthogroup,gene family。
  • What is homology in biology? - California Learning Resource Network
    Homology, a cornerstone concept in evolutionary biology, is the study of shared ancestry manifested in similar structures, sequences, or other traits across different taxa
  • Homology - Definition and Examples - Biology Online Dictionary
    Biology definition: Homology is a condition characterized by having a degree of similarity, as in position or structure, that may indicate a common origin There is a correspondence of structure The term is a common or fundamental concept in evolutionary biology and genetics
  • Homologies - Understanding Evolution
    If different species share common ancestors, we would expect organisms to share similarities inherited from those ancestors Features inherited from common ancestors—even if their appearance is quite different in close relatives— are known as homologies Homologies can be identified by comparing the anatomies of different living things, looking at cellular similarities, studying





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