homologous

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homologous

 [ho-mol´ŏ-gus]
1. corresponding in structure, position, origin, or other aspects.
3. pertaining to an antibody and the antigen that elicited its production.

ho·mol·o·gous

(hō-mol'ō-gŭs), Corresponding or alike in certain critical attributes.
1. In biology or zoology, denoting organs or parts corresponding in evolutionary origin and similar to some extent in structure, but not necessarily similar in function.
2. In chemistry, denoting a single chemical series, differing by fixed increments.
3. In genetics, denoting chromosomes or chromosome parts identical with respect to their construction and genetic content.
4. In immunology, denoting serum or tissue derived from members of a single species, or an antibody with respect to the antigen that produced it.
5. Proteins having identical or similar functions (particularly with respect to proteins from different species).
[see homologue]

homologous

/ho·mol·o·gous/ (ho-mol´ah-gus)
1. corresponding in structure, position, origin, etc.

homologous

(hə-mŏl′ə-gəs, hō-)
adj.
1. Corresponding or similar in position, value, structure, or function.
2. Derived from the same species: a homologous graft.
3. Biology Similar in structure and evolutionary origin, though not necessarily in function, as the flippers of a seal and the hands of a human.
4. Immunology Relating to the correspondence between an antigen and the antibody produced in response to it.
5. Genetics
a. Relating to chromosomes that have the same morphology and linear sequence of gene loci.
b. Relating to genes that are derived from a common ancestor.
6. Chemistry Belonging to or being a series of organic compounds, each successive member of which differs from the preceding member by a constant increment, especially by an added CH2 group.

homologous

[hōmol′əgəs]
Etymology: Gk, homos, same, logos, relation
pertaining to corresponding attributes or similar in structure. Compare analogous. See also homolog.

ho·mol·o·gous

(hŏ-mol'ŏ-gŭs)
1. biology Denoting organs or parts corresponding in evolutionary origin and similar to some extent in structure, but not necessarily similar in function.
2. chemistry Denoting a single chemical series, differing by fixed increments.
3. genetics Denoting chromosomes or chromosome parts identical with respect to their construction and genetic content.
4. immunology Denoting serum or tissue derived from members of a single species, or an antibody with respect to the antigen that produced it.

homologous

1. Of corresponding structure, position, function or value.
2. Having the same consecutive sequence of genes as another chromosome.
3. Belonging to a series of organic compounds of which the successive members differ by constant chemical increments.
4. Of transplantation in which the donor and recipients are of the same species.

homologous

(of organs, or structures) deriving from the same evolutionary origins. For example, the forelimb of a quadruped, the human arm, the wing of a bird, are said to be homologous (see PENTADACTYL LIMB). Usually similarities are seen best in embryonic development, and are regarded by taxonomists as indications of relationships between present-day organisms.

homologous

1. corresponding in structure, position, origin, etc.
2. derived from an animal of the same species but of different genotype; allogeneic.
References in periodicals archive ?
A recent application of this imaging modality includes the investigation of human cardiac genes as homologously expressed in fruit flies (Drosophila melanogaster).
Linguists with a strong analogical bent, such as Kenneth Pike, have argued that grammatical form falls into homologously quadratic paradigms.
A survey conducted by the hospital found that about half of all its autologous donors had at some time donated homologously, but that almost none were active homologous donors at the time of the survey.