conjugation

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conjugation

 [kon″joo͡-ga´shun]
a joining. In unicellular organisms, a form of sexual reproduction in which two individuals join in temporary union to transfer genetic material. In biochemistry, the joining of a toxic substance with some natural substance of the body to form a detoxified product for elimination from the body.

con·ju·ga·tion

(kon'jŭ-gā'shŭn),
1. The union of two unicellular organisms or of the male and female gametes of multicellular forms followed by partition of the chromatin and the production of two new cells.
2. Bacterial conjugation, effected by simple contact, usually by means of specialized pili through which transfer genes and other genes of the plasmid are transferred to recipient bacteria.
3. Sexual reproduction among protozoan ciliates, during which two individuals of appropriate mating types fuse along part of their lengths; their macronuclei degenerate and the micronuclei in each macronucleus divide several times (including a meiotic division); one of the resulting haploid pronuclei passes from each conjugant into the other and fuses with the remaining haploid nucleus in each conjugant; the organisms then separate (becoming exconjugants), undergo nuclear reorganization, and subsequently divide by asexual mitosis.
4. The combination, especially in the liver, of certain toxic substances formed in the intestine, drugs, or steroid hormones with glucuronic or sulfuric acid; a means by which the biologic activity of certain chemical substances is terminated and the substances made ready for excretion.
5. The formation of glycyl or tauryl derivatives of the bile acids.
6. An alternating sequence of multiple and single chemical bonds in a chemical compound in which there is some delocalization of π-electrons.
7. The joining together of two compounds.
[L. con-jugo, pp. -jugatus, to join together]

conjugation

(kŏn′jə-gā′shən)
n.
1.
a. The act of conjugating.
b. The state of being conjugated.
2. Biology
a. The temporary union of two bacterial cells during which one cell transfers part or all of its genome to the other.
b. A process of sexual reproduction in which ciliate protozoans of the same species temporarily couple and exchange genetic material.
c. A process of sexual reproduction in certain algae and fungi in which temporary or permanent fusion occurs, resulting in the union of the male and female gametes.

con′ju·ga′tion·al adj.
con′ju·ga′tion·al·ly adv.

conjugation

The act of being joined together or conjugated

con·ju·ga·tion

(kon'jŭ-gā'shŭn)
1. Union of two unicellular organisms or of the male and female gametes of multicellular forms followed by partition of the chromatin and the production of two new cells.
2. Bacterial conjugation, effected by simple contact, through which transfer genes and other genes of the plasmid are transferred to recipient bacteria through pili.
3. Sexual reproduction among protozoan ciliates, during which two individuals of appropriate mating types fuse along part of their lengths; their macronuclei degenerate and the micronuclei in each macronucleus divide several times (including a meiotic division); one of the resulting haploid pronuclei passes from each conjugant into the other and fuses with the remaining haploid nucleus in each conjugant; the organisms then separate (becoming exconjugants), undergo nuclear reorganization, and subsequently divide by asexual mitosis.
4. The combination, especially in the liver, of certain toxic substances formed in the intestine, drugs, or steroid hormones with glucuronic or sulfuric acid; a means by which the biologic activity of certain chemical substances is terminated and the substances made ready for excretion.
5. The formation of glycyl or tauryl derivatives of the bile acids.
[L.con-jugo, pp. -jugatus, to join together]

conjugation

1. Chemical combination or linkage of chemical groups to organic molecules, often to produce a water-soluble form and allow more ready excretion.
2. The exchange of genetic material between paired single-cell organisms, such as bacteria.

conjugation

a method of sexual reproduction involving the fusion of similar GAMETES which are not freed from the parent forms, as in ciliates where two individuals fuse together, exchange micronuclear material, and then separate. Conjugation also occurs in some algae, e.g. Spirogyra and fungi, e.g. Mucor. The transfer of genetic material between bacterial cells in which the DONORS and recipients come into physical contact is also regarded as conjugation. see CONJUGATIVE PLASMID, SEX PILUS.

con·ju·ga·tion

(kon'jŭ-gā'shŭn)
1. An alternating sequence of multiple and single chemical bonds in a chemical compound.
2. Joiningtogether of two compounds.
[L. con-jugo, pp. -jugatus, to join together]
References in periodicals archive ?
A survey of a patient without the use of relevant protocols and methodological requirements leads to the fact that the doctors of practical public health, in the case of a favorable clinical outcome discharge patients with a diagnosis of "neonatal or conjugational jaundice," do not take into account the presence of CMV IgG antibodies.
In the last session, while pointing at the conjugational conflicts and their roots, the spouses were trained on righteous mode of contacting the troubles and the resolving method, and the sessions briefing and suggestions, critics were taken place, again the related questionnaire were put at the disposal of the spouses as a post-test.
In continuation of the issue covariance analysis was used in order for checking the significant difference between the two test and control groups in regard to dimensions of the conjugational commitment.
The results of the table 8 show that, considering the observed scores of the pre-test F, in regard to the mean scores of the post-test, the dimensions of the personal, structural and moral commitment in the test and control groups are significant, and Islamic-centered training approach is effective on the raise of the conjugational commitment.
This is in the sense that the effectiveness of the Islamic centered conjugational therapy is not under the influence of the gender, and the effect/influence of which did not differ in men and women, and as a consequence the stipulation 1 is not approved/confirmed.
The stipulation 3--The Islamic-centered conjugational therapy is effective on the dimensions of the spouses' optimism, i.e.
The non-verbal and verbal conjugational paradigms are symmetric, in that neither of them have an inflectional category of future; rather, an auxiliary is needed.
Classes are defined by the distribution of stems across the sets of forms that comprise conjugational series in Estonian.
These are, moreover, the only classes defined by form variation in the conjugational system.
The three stem-grade classes show the only productive prosodic alternations in the conjugational system.
These additional patterns certainly help to give a fuller picture of the amount of idiosyncratic form variation within the conjugational system.
Personal conjugational suffixes of the Udmurt verb are not "identical" (p.