(n.) Self-fertilization, the fertilizing pollen being derived from the same blossom as the pistil acted upon.
Example Sentences:
(1) This study examines the consequences of nutritional down-shift at various points within the cell cycle on the occurrence of autogamy.
(2) The clonal age in paramecia refers to the total number of vegetative divisions a clone has undergone since its origin at autogamy (self-fertilization).
(3) Treatments that perturb the cell cycle and displace the point of commitment of division also displace the point of initial commitment to autogamy to the same extent.
(4) The 22 cell lines with defective micronucleus exhibited various abnormalities of the oral apparatus newly formed during autogamy.
(5) Injection of nucleoplasm into vegetative macronuclei produced over 70% transformants able to express the A serotype after the next autogamy.
(6) Together with other data, this result suggests that in wild type cells the A gene in the old macronucleus ensures the presence of a cytoplasmic factor that prevents A gene deletions at autogamy.
(7) The resistant stocks (R) are able to grow continuously at 35 degrees C while the sensitive stock (S) cells die within 48 h. The F1s of R X S crosses exhibited a cytoplasmic pattern of inheritance and all F2-by-autogamy lines derived from the S cytoplasmic parent are sensitive.
(8) After autogamy, a large increase of catalase activity occurs during the sexual immaturity phase, i.e.
(9) We found the sporadic occurrence of very long clonal lifespans, such as 330 fissions, without selection and autogamy.
(10) The amicronucleate cell lines showed reduced growth rate and formed abnormal oral apparatuses in asexual reproduction, and failed to produce any oral apparatus in autogamy, in agreement with previous observations on amicronucleate cells obtained by micropipetting.
(11) Autogamy, which leads to complete homozygosity, guarantees the expression of recessive mutations.
(12) Since micronuclei were not transplanted, the phenotypic reversion after autogamy is to be expected, and demonstrates that the transformation affects the macronucleus only.
(13) Processing of micronuclear DNA into new macronuclear DNA at conjugation and autogamy is under the control of the old macronucleus, and newly forming macronuclei become exactly like the old.
(14) Autogamy, which was checked with two closely linked marker genes, was frequent, but only during the period when lines were terminating.
(15) No degeneration of cilia is observed in natural autogamy of P. tetraurelia, whereas in chemically induced autogamy of P. caudatum degeneration occurs as in ordinary conjugation.
(16) Autogamy is a process of meiosis and fertilization which takes place in unpaired Paramecium cells, and which is triggered by starvation.
(17) If, however, the hybrid cell lines are brought to autogamy (which discards the existing macronucleus and forms a new one from sexual products derived from a micronucleus), then the lines revert to the ftA phenotype.
(18) If cells are refed at this point, or at later stages, autogamy continues.
(19) The level of starvation required for initiation of autogamy decreases progressively as cells age.
(20) Transfer of macronucleoplasm from the wild type to strain d48 caused d48 to revert to the wild type after autogamy.
Pollen
Definition:
(n.) Fine bran or flour.
(n.) The fecundating dustlike cells of the anthers of flowers. See Flower, and Illust. of Filament.
Example Sentences:
(1) We conclude that the priming effect is not a clinically significant phenomenon during natural pollen exposure in allergic rhinitis patients.
(2) The diagnosis of occupational allergy was based on history, skin prick tests and RAST to the pollen.
(3) Using a large clinic population with adequate controls, significant correlation between ragweed, grass or tree pollen sensitivity and the dates of birth was not obtained.
(4) For pollen asthma, six studies conclude that there were superior results with desensitization than to placebo.
(5) They were placed less than 5 m apart, and estimation of the pollen amount was made on a day-to-day basis during the pollen seasons, and on a weekly basis outside the seasons.
(6) The impact of pollen on the respiratory mucosa was modeled by studying the process by which solutes are eluted from pollen grains.
(7) One part fresh pollen grains is uniformly mixed with nine parts of the solution and left at room temperature for at least 5 hr.
(8) We have developed a reverse-type sandwich ELISA for measurement of IgG (+IgA) antibody to a major allergen of Sugi (Japanese cedar) pollens.
(9) The concentration of these pollens decrease in April, completely diminishing in May.
(10) Six atopic subjects with grass pollen allergy and six nonallergic healthy volunteers were enrolled into this study.
(11) Inhalant allergens as mite house dust, animal danders, pollens, molds and food allergens are considered, now, to be the most sensitizing agents.
(12) Most patients showed several positive skin tests to common allergens particular to grass pollen, house dust and mites (Dermatophagoides pteronyssimus).
(13) The pollen sterility (up to 30% of grains) is due to the abortive spore development.
(14) A pollen-specific cDNA clone, Zmc13, has been isolated from a cDNA library constructed to poly(A) RNA from mature maize pollen.
(15) Sixty patients with seasonal allergic rhinitis due to birch pollen were enrolled in an open, randomized parallel group study.
(16) We have studied some aspects of the atopic syndrome in this population of Southern Italy: frequency of allergic sensitization according to endogenous and extrinsic factors (particularly Parietaria officinalis, a characteristic pollen of the Southern Italian Flora), etc.
(17) It was observed that cocksfoot pollen extract is stable but there appears a slight but significant (P less than 0.05) decay in activity when the extract stored for up to 6 months was compared with a freshly prepared extract.
(18) These are collected in her pollen baskets which she takes back to the nest to feed the young after fertilising the flowers.
(19) It was observed, perhaps for the first time, that feeling worse when there is a high pollen count appears to be associated with the symptom pattern seen in winter SAD patients.
(20) In allergologic out-patient departments of Dubrovnik, Split, Sibenik, Zadar, Pula and Rijeka, 300 patients with pollinosis have been tested by the application of the prick method of group allergens of grass, tree and weed pollen, particularly of Parietariae (pellitory) pollen.