(a.) Having no distinct sex; without sexual action; as, asexual reproduction. See Fission and Gemmation.
Example Sentences:
(1) We hypothesize that a dynamic complex of sexual and clonal fishes appear to participate in a feedback process that maintains genetic diversity in both the sexual and asexual components.
(2) Changes in the fitness of harmful mutations may therefore impose a greater long-term disadvantage on asexual populations than those which are sexual.
(3) Secondary echinococcosis generates by asexual regressive metamorphosis of larval element intro larval forms.
(4) However, differences between the two groups were statistically significant only for P. falciparum asexual forms.
(5) The intermediate cells divide asexually by endodyogeny giving rise, on the one hand, to another population of intermediate cells, and on the other--to merozoites which divide no longer.
(6) A concentration of 3 x 10(-9) M halofantrine was lethal to both asexual parasites and gametocytes.
(7) Light is necessary for asexual sporulation in Aspergillus nidulans but will elicit conidiation only if irradiation occurs during a critical period of development.
(8) In the other 17 cases followed up to day 21, six were found again with asexual parasites between day 9 and day 14 and a seventh on day 21.
(9) Improved methods were developed for the determination of reduced glutathione (GSH), glutathione disulfide (GSSG), and protein-glutathione disulfide (PSSG) and applied to determine the glutathione status at various stages of the asexual life cycle for the band strain of Neurospora crassa.
(10) A large variety of fungi are known to produce asexual spores known as arthroconidia.
(11) The selection equations for sexual and asexual reproduction of genotypes corresponding to mixed strategies are analysed.
(12) These results are consistent with genetic data suggesting that stuA gene function is required from the very earliest events of asexual reproduction until completion of conidiophore development, but is not specifically required for differentiation of conidia.
(13) Protoplasts were prepared from asexual spores that harbor one or two mutations in the structural gene for tryptophan synthetase.
(14) They also occurred in the immunocytic systems after the first and during the second asexual multiplication and during the relatively late cystic phase of the parasite in the brain.
(15) Five days after therapy with 600 mg chloroquine base, the asexual parasitemia in the American increased 40-fold, but cleared after treatment with 1,500 mg chloroquine base.
(16) We have tested the effect of 2DG on Candida albicans to see if it could be used to obtain GalK- mutants in this diploid asexual yeast.
(17) (owl monkey) is one of the WHO recommended experimental models for Plasmodium falciparum blood stage infection, especially relevant for vaccination studies with asexual blood stage antigens of this parasite.
(18) Cyclic parthenogens have made the transition to obligate asexuality with high frequency, but there is little evidence to support the argument (Williams, 1975) that such shifts result from the relaxation of the short-term selection pressures supposedly necessary to sustain the sexual phase of the life cycle.
(19) Malaria parasites of the genus Plasmodium spend much of their asexual life cycle inside the erythrocytes of their vertebrate hosts.
(20) We established and analyzed human T lymphocyte clones induced by crude Plasmodium falciparum antigens of schizont-enriched asexual blood stages.
Gemmation
Definition:
(n.) The formation of a new individual, either animal or vegetable, by a process of budding; an asexual method of reproduction; gemmulation; gemmiparity. See Budding.
(n.) The arrangement of buds on the stalk; also, of leaves in the bud.
Example Sentences:
(1) The number of cells gemmation is the same at suboptimum and optimum temperature but it decreases at supraoptimum one.
(2) The ascospores were found in thick-walled bags, the asci; the arthrospores, that undergo gemmation, are eliminated through canals, disseminating the disease.
(3) Vesicles were formed by gemmation of enterocyte microvilli from the lateral membrane in contraction of microvillous actin skeleton.
(4) There is a supposition that the vesicle gemmation is a natural process of the intestinal secretion to fulfil numerous important function: it promotes the penetration of enterocyte hydrolases into the parietal layer; equilibrates an increase in the enterocyte volume during absorption.
(5) The growth specific rate, cells dimensions, the number of cells gemmation, juvenile and postjuvenile development phases duration have been measured on the yeast turbidostate culture Saccharomyces cerevisiae strain 14 growing under different temperature conditions.
(6) About 90% of the bacteria in nodules were found in the form of bacteroids from the early phase of the plant growth (budding) to ripening when gemmated arthrospores could be observed on some bacteroids.
(7) Numerous investigators have shown that the development of the bursal lymphoid follicle in chicken begins with the formation of epithelial gemmations called epithelial buds.