Results 201 to 210 of about 8,766,279 (258)

Effects of Sex on Renal Structure

Nephron, 2002
<i>Aims:</i> There are few data examining differences in renal structure between the sexes. Elucidation of the mechanisms responsible for the observed effects of sex on the progression of chronic renal disease requires knowledge of the effects of sex on renal structure.
Joel, Neugarten, Bertram, Kasiske, Sharon R, Silbiger, Jens R, Nyengaard   +3 more
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Structured Populations and the Maintenance of Sex

2013
The maintenance of sexual populations has been an ongoing issue for evolutionary biologists, largely due to the two-fold cost of sexual versus asexual reproduction. Many explanations have been proposed to explain the benefits of sex, including the role of recombination in maintaining diversity and the elimination of detrimental mutations, the advantage
Peter A. Whigham, Grant Dick, Alden H. Wright, Hamish G. Spencer   +3 more
openaire   +1 more source

Sex Liability to Single Structural Defects

Archives of Pediatrics & Adolescent Medicine, 1978
Forty-two of 52 single, localized defects of morphogenesis showed a nonrandom predeliction to one sex. For some of these malformations, the sex liability may be explained on the basis of normal anatomic or hormonal differences between the sexes. For example, the male excess of "prune belly" or triad syndrome is considered due to the fact that most ...
J, Fernando, P, Arena, D W, Smith
openaire   +2 more sources

On the structure of the sex attractant of the American cockroach

Journal of the Chemical Society C: Organic, 1966
The structure 2,2-dimethyl-3-isopropylidenecyclopropyl propionate has been proposed for the pheromone of the cockroach Periplaneta americana(L). Rational synthesis of this compound and comparison with published data definitely disprove this attribution. The route used involved addition of 2-diazopropane to 3-methylbuta-1,2-dienyl propionate, photolysis
A C, Day, M C, Whiting
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Sex determination: Ant supergenes link sex ratio to social structure

Current Biology, 2021
A new study maps individual Formica ant queens' tendency to produce single-sex offspring to a so-called 'supergene' locus. This supergene neighbors another supergene determining social structure. Consequently, single-queen and multi-queen colonies disproportionately produce daughters and sons, respectively.
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Sex Structure of Occupations

Sociology of Work and Occupations, 1979
A comparison of the patterns of change in female labor force participation reveals considerable similarities between Israel and the U. S. In both countries women tend to be concentrated in a small number of "female" occupations, characterized by their close association with tasks traditionally performed by women.
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Attitudes, Cognitive Structures and Emotional Reactivity to Sex and Security: Sex Differences

Psychological Reports, 1974
An attempt was made to determine if sex differences existed for attitudes, cognitive structures, and emotional reactivity for concepts of sex and security and for stimuli. It was hypothesized that for males, the concept of sex and/or sexual stimuli will be ranked higher, elicit a stronger physiological response, elicit a greater number of responses in ...
R S, Cimbalo, P A, Anzelone, P A, Ryan, M P, Younkers   +3 more
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The structuring of Vicarious Sex

Deviant Behavior, 1996
This paper proposes a change in the typing of a form of sexual deviance: voyeurism (watching persons who are undressing, undressed, or in the act of sexual intercourse). The analysis focuses on a suggested change in what is thought to prompt voyeurism. Voyeurism is presently regarded as pathological deviance by some researchers.
openaire   +1 more source

Sex and Social Structure

Science, 2009
Behavioral ecologists are discovering that social roles in bees may recapitulate the reproductive life cycle of solitary females.
openaire   +1 more source