(n.) Oneness of origin; esp. (Biol.), development of all beings in the universe from a single cell; -- opposed to polygenesis. Called also monism.
(n.) That form of reproduction which requires but one parent, as in reproduction by fission or in the formation of buds, etc., which drop off and form new individuals; asexual reproduction.
(n.) The direct development of an embryo, without metamorphosis, into an organism similar to the parent organism; -- opposed to metagenesis.
Example Sentences:
Sporulation
Definition:
(n.) The act or process of forming spores; spore formation. See Illust. of Bacillus, b.
Example Sentences:
(1) During the 1st h after induction of the sporulation process, the rate of protein synthesis increased to two times the initial value.
(2) We report the isolation of an RNA polymerase from sporulating cells of Bacillus thuringiensis subsp.
(3) ); and 3) those that multiply and produce large numbers of vegetative cells in the food, then release an active enterotoxin when they sporulate in the gut.
(4) One of these has high sporulation-inducing activity after illumination in vitro.
(5) The use of phase-contrast and interference-contrast optics permitted the characterization of the distinctive morphological changes occurring during sporulation of C. thermosaccharolyticum.
(6) The nature and properties of the 20S ribonucleic acid which accumulates only during the sporulation of Saccharomyces cerevisiae were examined.
(7) Tetrad dissection of sporulated diploids heterozygous for the wild-type and mutant allele resulted in a 2:2 segregation of mutant and wild-type phenotype indicating a single gene mutation.
(8) Bacillus megaterium, in which sporulation was blocked either by mutation or with netropsin, synthesizes during the stationary phase more exocellular proteinase than the sporulating culture.
(9) It is suggested that several metabolic steps may be affected in catabolite repression of sporulation.
(10) Heat resistance increased about tenfold in the range of 30-44 degrees C. Sporulation at 52 degrees C did not show any further increase in heat resistance.
(11) The mycelium of Trichoderma viride grown in the dark under submerged conditions and transferred to membrane filters sporulated only after photoinduction.
(12) Certain sporulation-specific polypeptides including the coat protein were among the most actively produced polypeptides in sporulating cells.
(13) Decoyinine, an inhibitor of GMP synthetase, was used to induce sporulation under catabolite-repressed conditions in Bacillus subtilis.
(14) Carbohydrate metabolism, under sporulation conditions, was compared in sporulating and non-sporulating diploids of Saccharomyces cerevisiae.
(15) Our results demonstrate that the partial reduction of a guanine nucleotide, probably relative to some other compound, suffices to initiate sporulation.
(16) The effect of gramicidin S added to the cultivation medium on sporulation of the gramicidin S-producing P+ variant and gramicidin S-nonproducing P- variant of Bacillus brevis var.
(17) In the non-sporulating strains, the degradation of vegetative RNA was less than 28% in the sporulation medium.
(18) Homozygotes of hrr25-1 were unable to sporulate and disruption and deletion of HRR25 interfered with mitotic and meiotic cell division.
(19) Melanin synthesis in the myxomycete Physarum polycephalum occurs during sporulation but not during spherule formation.
(20) Sporulation occurs during the late logarithmic phase of a culture, a time of slow but unbalanced growth.