When conjugation is initiated, via a mating signal, a relaxase enzyme creates a nick in one plasmid DNA strand at the origin of transfer, or oriT.
Bacterial conjugation
Bacterial conjugation is the often regarded as the bacterial equivalent of sexual reproduction or mating; however it is not actually sexual as it does not involve the fusing of gametes and the creation of a zygote, ...
Conjugation
Some bacteria, E. coli is an example, can transfer a portion of their chromosome to a recipient with which they are in direct contact. As the donor replicates its chromosome, the copy is injected into the recipient.
Conjugation
The establishment of a bridge between a donor and a recipient cell and the transfer of DNA from one cell to the other. Conjugation is mediated by certain plasmids and transposons.
Conjugation. The joining of two bacteria cells when genetic material is transferred from one bacterium to another.
Constitutive promoter. An unregulated promoter that allows for continual transcription of its associated gene. (See Promoter.) ...
conjugation - form of sexual reproduction (exchange of genetic material) used by some unicellular organisms.
conjugation tube
Connecting tube that allows two individuals to fuse together temporarily in order to exchange micronuclear material.
contractile vacuole
An organelle that pumps excess water out of many freshwater protist cells.
Conjugation: In unicellular organisms, temporary cell contact between complementary genders and exchange of genetic material, as in the ciliate Paramecium aurelia, ...
Conjugation
A process where two cells come in contact and exchange genetic material. In prokaryotes the transfer is a one-way process.
Conjugation is another means of gene transfer in many species of bacteria (Fig. 3).
Conjugation
- Plasmid-mediated transfer of genetic material from a 'male' donor bacterium to a 'female' recipient
Consensus sequence ...
conjugation Temporary union of two ciliate protozoa while they are exchanging chromatin material and undergoing nuclear phenomena resulting in binary fission. Also, formation of cytoplasmic bridges between bacteria for transfer of plasmids.
Conjugation, shown in Figures 11 and 12, is the process where one bacterium passes DNA to another through a tube (the sex pilus) that temporarily joins the two conjugating cells.
(Science: cell biology) fine filamentous projections (pili) on the surface of a bacterium that are important in conjugation.
The conjugation or fusion of homologous chromosomesduring prophase of the first meiotic division, when crossing over occurs. Normally syndesis starts at the telomeres and passes on to the centromeres like a zipper.
Related Terms: ...
Other types of plasmids, however, form a tubelike structure at the surface called a pilus that passes copies of the plasmid to other bacteria during conjugation, a process by which bacteria exchange genetic information.
Some bacteria have sex pili which are responsible for bacteria recognizing one another and the consequent formation of a conjugation tube which allows the transfer of DNA from a "male" cell to a "female" cell.
A fertility factor in bacteria, a DNA segment that confers the ability to form pili for conjugation and associated functions required for the transfer of DNA from donor to recipient. May exist as a plasmid or integrated into the bacterial chromosome.
The micronucleus are involved in sexual reproduction in a process known as conjugation that is shown in Figure 12. The macronucleus disintegrates and the micronucleus undergoes meiosis. Two ciliates then exchange a haploid micronucleus.
nuclear reorganization in a single Paramecium cell similar to the changes that occur during conjugation.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
Fertility factor A bacterial plasmid that contains genes required for conjugation.
First messengers Hormones; molecules that transduce signals from one tissue to another tissue (the target tissue) through the blood.
The Subkingdom of the Kingdom Animalia, in older classification systems, that includes all unicellular organisms that lack differentiated tissues and that primarily reproduce through asexual means, although conjugation does occur.
Sequence analysis suggests that in some cases these "pathogenicity islands" have been transferred from other species. Thus it is possible for a harmless bacterium to acquire the genes necessary to make it a pathogen in one step, by conjugational ...
The conjugation of the universal ET cassette with maleimide-derivatized terminator or primer is almost quantitative in 2 hours at room temperature. When used in sequencing, cassette-labelled primers gave excellent results.
 See also: Cell, Cells, Organ, Trans, DNA
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