| matin | 1. Morning. 2. [F. Matines. See Etymol. Above] Morning worship or service; morning prayers or songs. "The winged choristers began To chirp their matins." (Cleveland) 3. Time of morning service; the first canonical hour in the Roman Catholic Church. Origin: F. Fr. L. Matutinum the morning, matutinus of the morning, Matuta the goddess of the morning. See Matutinal. <zoology> A French mastiff. Origin: F. Matin. Source: Websters Dictionary (01 Mar 1998) |
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| mating | The pairing of male and female for the purpose of reproduction. (05 Mar 2000) |
| mating isolate | A population separated from its neighbors by any means so that all or most matings occur within the population group. (05 Mar 2000) |
| mating type gene | Genes that, in Saccharomyces cerevisiae specify into which of the two mating types (a and _) a particular cell falls. Only unlike mating type haploids will fuse. The interest derives from the way in which mating type is switched, the existing gene is removed and a new gene, derived from a (silent) master copy elsewhere in the genome is spliced in. Later this gene will in its turn be replaced by a new copy of the old gene, also derived from a silent master. The a and _ genes code for pheromones that affect cells of the opposite mating type. Similar mating type genes are known from other yeasts and the switching mechanism (cassette mechanism) may be used more generally. (18 Nov 1997) |