Sexual Processes in Schizophrenia (1961) 1

2018 ◽  
pp. 429-442
Author(s):  
Harold F. Searles
Keyword(s):  
Sexual Processes

Sexual processes in the kinetoplastida

Parasitology ◽  
1983 ◽  
Vol 86 (4) ◽  
pp. 29-57 ◽  
Author(s):  
A. Tait
Keyword(s):  
Drug Resistance ◽  
Genetic Exchange ◽  
Sexual Cycle ◽  
Drug Resistant ◽  
Sexual Process ◽  
Experimental Approaches ◽  
Well Differentiated ◽  
Sexual Processes ◽  
Open Question

SUMMARYThe commonly held view that the kinetoplastida, and in particular trypanosomes, are asexual is largely derived from the principle that an organism is asexual until proved sexual. If the basis for this view is examined in detail, it largely arises from the lack of morphologically distinguishable gametes, the difficulties encountered in visualizing chromosomes and a few experiments, using drug-resistant stocks, in which no recombination between stocks could be demonstrated. While it is clear that these organisms are able to reproduce asexually, the existence of a sexual cycle was, until recently, an entirely open question. The early work strongly suggests that any sexual process (in the species examined extensively at the morphological level) does not involve classical well-differentiated gametes and so must involve fusion of morphologically very similar cells. These findings taken together with the inability to visualize chromosomes and thereby identify meiosis, mean that classical methods are unable to detect any sexual process even if it did occur. This review examines the evidence provided by the experimental approaches which have been applied recently to the question of kinetoplastid sexuality. These approaches include isoenzyme studies and the analysis of possible genetic exchange by the use of selective markers (e.g. drug resistance). The results which these techniques have produced make it clear that the kinetoplastid protozoans cannot be regarded as a totally asexual group of organisms.

Implicit and Explicit Cognitive Sexual Processes in Survivors of Childhood Sexual Abuse

2011 ◽  
Vol 8 (11) ◽  
pp. 3098-3107 ◽  
Author(s):  
Alessandra H. Rellini ◽  
A. David Ing ◽  
Cindy M. Meston
Keyword(s):  
Sexual Abuse ◽  
Childhood Sexual Abuse ◽  
Sexual Processes ◽  
Implicit And Explicit

scholarly journals Genetic variation within and between populations of the asexual plant Puccinellia × phryganodes

1983 ◽  
Vol 61 (3) ◽  
pp. 774-779 ◽  
Author(s):  
R. L. Jefferies ◽  
L. D. Gottlieb
Keyword(s):  
Genetic Variation ◽  
Genetic Variability ◽  
Salt Marshes ◽  
Clonal Growth ◽  
Seed Set ◽  
Electrophoretic Mobilities ◽  
Enzyme Systems ◽  
Puccinellia Phryganodes ◽  
Sexual Processes ◽  
High Level

Puccinellia × phryganodes (Trin.) Scriber and Merr is widely distributed in Arctic salt marshes. In North America the species, which is capable of extensive clonal growth, appears to be a sterile triploid (2n = 21); seed set has never been observed. Consequently it was predicted that the level of genetic variation would be low, both within and between populations. Examination of electrophoretic mobilities of isozymes of 12 enzyme systems in plants from three widely separated populations in Arctic Canada indicated a high level of variability both within and between the populations. The unexpected discovery of significant amounts of genetic variability suggests that sexual processes occur in this species.

Studies on the development, life history and taxonomy of the Ectocarpales (Phaeophyta) in southern Australia

1974 ◽  
Vol 22 (4) ◽  
pp. 743 ◽  
Author(s):  
MN Clayton
Keyword(s):  
Life History ◽  
Brown Algae ◽  
Life Histories ◽  
Type Material ◽  
History Of ◽  
Juvenile Stages ◽  
Morphology Development ◽  
Sexual Processes

The morphology, development and life history of filamentous brown algae, in particular species of the commoner genera Feldmannia, Giffordia and Hecatonema, are described. Morphogenetic differences parallel the well known morphological distinctions between Feldmannia and Giffordia. Two 'species' of Feldmannia, F. globifer and F. simplex, are not distinct but rather exhibit continous variation of a clinal nature. Previous records of Giffordia secunda are shown to apply to Giffordia granulosa. Studies of living and type material of Ectocarpus sordidus indicate that its affinities lie with the genus Giffordia, to which it is transferred. Life histories of the various ectocarpalean taxa show many similarities and, with minor exceptions do not furnish additional useful taxonomic characters. The predominant means of reproduction amongst the Australian Ectocarpales are asexual, sexual processes being apparently of minor signi- ficance. Life history studies of Hecatonema maculans show it to be indistinct from juvenile stages of two members of the Dictyosiphonales, Desmotrichum undulatum and Punctaria latifolia. Five genera and six species are newly recorded for Australia. The genera are Acinetospoua, Hecatonenza, Kuckuckia, Kuetzingiella and Sovocarpus and the species are Acinetospora crinita (Carmichael ex Harvey in J. D. Hooker) Kornmann, Giffordia fuscata (Zanardini) Kornmann in Kuckuck, Giffordia intermedia (Rosenvinge) Lund, Hecatonema maculans (Collins) Sauvageau, Kuckuckia spinosa (Kiitzing) Kuckuck and Sorocarpus micromorus (Bory) Silva.

Hubungan Dukungan Ibu dengan Kesiapan Remaja Putri dalam Mengahadapi Menarche

2018 ◽  
Vol 1 (1) ◽  
pp. 54-57
Author(s):  
Sellia Juwita
Keyword(s):  
Young Women ◽  
Junior High School ◽  
Sampling Technique ◽  
The Body ◽  
World Health ◽  
Bivariate Analysis ◽  
P Value ◽  
Maternal Support ◽  
Health Organization ◽  
Sexual Processes

According to the World Health Organization (WHO), adolescents are individuals who are undergoing a period of transition that gradually reaches sexual maturity, changes in the souls of children into adulthood. The changes that occurred at the time of Menarche caused young women to be embarrassed. Therefore, young women need to make adjustments in behavior. The adjustment cannot be done smoothly, especially if there is no support from parents, especially mothers. The role of the mother is very important in the process of growth and development of children, especially during adolescence. Teens begin to recognize the various sexual processes that are happening on the body and soul first through the mother. The design in this research is quantitative analytic, with the population of junior high school girls in Kecamatan Senapelan with total sampling technique, the number of samples 258 people. Data were collected through questionnaires and processed by computerization then analyzed univariat and bivariate using chiquare test. Univariate results in the knowing of girls who get mother support 49.2 percent and who do not get support as much as 57.8 percent, adolescents ready to face menarche 57.4 percent and not ready as much as 42.6 percent. The result of bivariate analysis showed that there was a correlation between mother support with adolescent readiness in facing menarche where p value value less than 0,05. Adolescents with maternal support are more prepared for menarche than those who do not get support. Keywords: Maternal support, readiness, menarche, adolescence

SEXUAL PROCESSES AND PHYLOGENETIC RELATIONSHIPS OF A HOMOTHALLIC STRAIN IN THECLOSTERIUM PERACEROSUM-STRIGOSUM-LITTORALECOMPLEX (ZYGNEMATALES, CHAROPHYCEAE)

2010 ◽  
Vol 46 (2) ◽  
pp. 278-284 ◽  
Author(s):  
Yuki Tsuchikane ◽  
Machiko Sato ◽  
Tomoko Ootaki ◽  
Yume Kokubun ◽  
Hisayoshi Nozaki ◽  
...  
Keyword(s):  
Phylogenetic Relationships ◽  
Sexual Processes

Relationships between sexual processes and parasitic interactions in the host–pathogen systemAbsidia glauca–Parasitella parasitica

1995 ◽  
Vol 73 (S1) ◽  
pp. 243-250 ◽  
Author(s):  
J. Wöstemeyer ◽  
A. Wöstemeyer ◽  
A. Burmester ◽  
K. Czempinski
Keyword(s):  
Mating Type ◽  
Molecular Level ◽  
Acid Synthesis ◽  
Infection Process ◽  
Mating Types ◽  
Infection Structures ◽  
Absidia Glauca ◽  
Facultative Parasite ◽  
Parasitic Interactions ◽  
Sexual Processes

Parasitella parasitica is a facultative parasite of many Mucorales including Absidia glauca. The infection process includes the formation of a plasmatic continuum between host and parasite, which allows the invasion of the host by nuclei of the parasite. This process gives rise to interspecies recombinants. Auxotrophic A. glauca mutants are complemented by the transfer of genes from the parasite to the host. At the molecular level, we could show that plasmid-coded genes are also transferred. The successful formation of infection structures is mating-type dependent. Parasitella parasitica exclusively infects hosts belonging to the complementary mating type. The formation of infection structures is correlated with the ability to synthesise the sex pheromone trisporic acid, which is produced in mixed cultures by compatible combinations between host and parasite. Normally, trisporic acid is formed by a cooperative biosynthesis involving both mating types. Trisporic acid seems to be involved also in mediating the recognition between P. parasitica and A. glauca. To test the hypothesis of direct hormonal correlations between sex and parasitism, we have isolated one of the key enzymes for trisporic acid synthesis, dihydromethyltrisporic acid dehydrogenase, sequenced the N-termini of some proteolytic cleavage products, and have started to isolate the corresponding gene. Key words: mycoparasitism, zygomycetes, trisporic acid, Absidia glauca, Parasitella parasitica, Mucor.

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