Male Parental Function
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. A função parental masculina na perspectiva de um bisavô
O presente trabalho teve como objetivo discutir como um homem idoso que atravessou o século XX e pode vivenciar todas as etapas do ciclo vital, foi significando a função parental em um contexto social de mudanças, em que até pouco tempo o modelo patriarcal geralmente estabelecia uma relação entre pai e filho de distanciamento afetivo, em uma sociedade
Publicado em: 2009
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2. Biologia reprodutiva e comportamento cooperativo em ninhos de Cyspsnagra Hirundinacea
White-rumped Tanager (Cypsnagra hirundinacea) is a cooperative breeding species, which helpers are offspring of earlier breeding seasons. This species occurs in open areas of the Cerrado (Neotropical savanna). The first chapter of this dissertation presents a description of several aspects of C. hirundinacea reproductive biology, including reproductive perio
Publicado em: 2008
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3. Stress promotes maleness in hermaphroditic modular animals
Sex-allocation theory developed for hermaphroditic plants predicts that impaired phenotype or reduced parental survivorship caused by environmental stress should induce relatively greater allocation to the male function. We provide experimental evidence of stress-induced maleness, already well documented in flowering plants, in a modular animal. By using
National Academy of Sciences.
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4. Allele-specific parental imprinting of dzr1, a posttranscriptional regulator of zein accumulation.
Parental imprinting describes the phenomenon of unequivalent gene function based on transmission from the female or male parent. We have discovered parental imprinting of an allele of the dzr1 locus that posttranscriptionally regulates the accumulation of 10-kDa zein in the maize endosperm. The imprinted allele of MO17 inbred origin, dzr1 + MO17, conditions
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5. A contingent valuation study to estimate the parental willingness-to-pay for childhood diarrhoea and gender bias among rural households in India
We used contingent valuation technique to estimate the parental willingness to pay for an episode of diarrhoea among 324 children of both sexes aged between five and seven years in two rural villages of Chennai in India. The aim was to examine if there was any gender bias in the parental willingness to treat children for a diarrhoeal episode, and if so to wh
BioMed Central.
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6. HYBRIDIZATION OF TWO BIOCHEMICALLY MARKED HUMAN CELL LINES*†
A hybrid cell line of clonal origin has been obtained by cocultivation of two biochemically marked human cell strains. One parental line is diploid and derived from a male infant with orotic aciduria, a rare autosomal recessive disease. This line has deficient activity for the final two enzymes in the biosynthetic pathway leading to uridylic acid and possess
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7. Studies on Sex Pili: Mutants of the Sex Factor F in Escherichia coli Defective in Bacteriophage-Adsorbing Function of F Pili
Ultraviolet irradiation or nitrosoguanidine treatment of Escherichia coli K-12 strain JE3100 (F′8/fla pil) led to the isolation of six mutants defective in F pili function. The defects were shown to be caused by mutations in the F factor. The mutants retained conjugal fertility, although they were less efficient than parental F′8 strain, and continued to
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8. Parent-of-origin effects on cardiac response to pressure overload in mice
Left ventricular (LV) hypertrophy (LVH) is an independent risk factor for cardiovascular mortality and is commonly caused by hypertension. In rodents, transverse aortic constriction (TAC) is a model regularly employed in mechanistic studies of the response of the LV to pressure overload. We previously reported that inbred strains of male mice manifest differ
American Physiological Society.
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9. Instability of CAG repeats in Huntington's disease: relation to parental transmission and age of onset.
Huntington's disease (HD) has recently been found to be caused by expansion of a trinucleotide (CAG) repeat within the putative coding region of a gene with an unknown function. We report here an analysis of HD mutation and the characteristics of its transmission in 36 HD families. CAG repeats on HD chromosomes were unstable when transmitted from parent to o