CAP(CRP) is a positive regulator protein activated by cyclic AMP. It is needed for RNa olymerase to initiate transcription of certain(catabolitesensitive) operons of E. coli. Capsid is the external protein coat of a virus particle Catabolite repression describes the decreased expression of many bacterial operons that results from addition of glucose. It is caused by a decrease in the level of cyclic AMP, which in turn inactivates the CAP regulator cDNA is a single-stranded DNA complementary to an RNA, synthesized from it by reverse transcription in vitro cDNA clone is a duplex DNA sequence representing an RNA, carried in a cloning vector Cell cycle is the period from one division to the next Cell hybrid is a somatic cell containing chromosomes derived from parental cells of different species (e.g. a man-mouse somatic cell hy brid), generating by fusing the cells to form a heterokaryon in which the nuclei subsequently fused Centrioles are small hollow cylinders consisting of microtubules that become located near the oles during mitosis. They reside within the centrosomes Centromere is a constricted region of a chromosome that includes the site of attachment to the mitotic or meiotic spindle(see also kinetochore) Centrosomes are the regions from which microtubules are organized at the poles of a mitotic cell. In animal cells, each centrosome contains a pair of centrioles surrounded by a dense amorphous region to which the microtubules attach. See also MTOC other protein, but which is not itself a component of the target compler%p Molecular chaperone is a protein that is needed for the assembly or proper folding of some Chemical complexity is the amount of a dNA component measured by chemical assay Chi sequence is an octamer that provides a hotspot for RecA-mediated genetic recombination Chi structure is a joint between two duplex molecules of DNA revealed by cleaving an intermediate of two joined circles to generate linear ends in each circle. It resembles a Greek Chiasma (pl chiasmata) is a site at which two homolo gous chromosomes appear to have exchanged material during meic Chromatids are the copies of a chromosome produced by replication. The name is usually used to describe them in the period before they separate at the subsequent cell division Chromatin is the complex of DNa and protein in the nucleus of the interphase cell Individual chromosomes cannot be distinguished in it. It was originally recognized by its reaction with stains specific for DNA Chromocenter is an aggregate of heterochromatin from different chromosomes Chromomeres are densely staining granules visible in chromosomes under certain conditions, especially early in meiosis, when a chromosome may appear to consist of a series of4 CAP(CRP) is a positive regulator protein activated by cyclic AMP. It is needed for RNA polymerase to initiate transcription of certain (catabolitesensitive) operons of E. coli. Capsid is the external protein coat of a virus particle. Catabolite repression describes the decreased expression of many bacterial operons that results from addition of glucose. It is caused by a decrease in the level of cyclic AMP, which in turn inactivates the CAP regulator. cDNA is a single-stranded DNA complementary to an RNA, synthesized from it by reverse transcription in vitro. cDNA clone is a duplex DNA sequence representing an RNA, carried in a cloning vector. Cell cycle is the period from one division to the next. Cell hybrid is a somatic cell containing chromosomes derived from parental cells of different species (e.g. a man-mouse somatic cell hybrid), generating by fusing the cells to form a heterokaryon in which the nuclei subsequently fused. Centrioles are small hollow cylinders consisting of microtubules that become located near the poles during mitosis. They reside within the centrosomes. Centromere is a constricted region of a chromosome that includes the site of attachment to the mitotic or meiotic spindle (see also kinetochore). Centrosomes are the regions from which microtubules are organized at the poles of a mitotic cell. In animal cells, each centrosome contains a pair of centrioles surrounded by a dense amorphous region to which the microtubules attach. See also MTOC. Molecular chaperone is a protein that is needed for the assembly or proper folding of some other protein, but which is not itself a component of the target complex. Chemical complexity is the amount of a DNA component measured by chemical assay. Chi sequence is an octamer that provides a hotspot for RecA-mediated genetic recombination in E. coli. Chi structure is a joint between two duplex molecules of DNA revealed by cleaving an intermediate of two joined circles to generate linear ends in each circle. It resembles a Greek chi in outline, hence the name. Chiasma (pl. chiasmata) is a site at which two homologous chromosomes appear to have exchanged material during meiosis. Chromatids are the copies of a chromosome produced by replication. The name is usually used to describe them in the period before they separate at the subsequent cell division. Chromatin is the complex of DNA and protein in the nucleus of the interphase cell. Individual chromosomes cannot be distinguished in it .It was originally recognized by its reaction with stains specific for DNA. Chromocenter is an aggregate of heterochromatin from different chromosomes. Chromomeres are densely staining granules visible in chromosomes under certain conditions, especially early in meiosis, when a chromosome may appear to consist of a series of