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A novel ZZ/ZW sex chromosome system for the genus Leporinus (Pisces, Anostomidae, Characiformes)
(Kluwer Academic Publ, 2004-05-01)
A wide range of sex chromosome mechanisms, including simple and multiple chromosome systems is characteristic of fishes. The Leporinus genus represent a good model to study sex chromosome mechanisms, because an unambiguous ...
Sex-Linked Chromosome Heterozygosity in Males of Tityus confluens (Buthidae): A Clue about the Presence of Sex Chromosomes in Scorpions
(Public Library of Science, 2016-10)
Scorpions of the genus Tityus show holokinetic chromosomes, achiasmatic male meiosis and an absence of heteromorphic sex chromosomes, like all Buthidae. In this work, we analysed the meiotic behaviour and chromosome ...
Critical patch-size for two-sex populations
(2018-06-01)
As environments become increasingly degraded, mainly due to human activities, species are often subject to isolated habitats surrounded by unfavorable regions. Since the pioneering work by Skellam [25] mathematical models ...
A ZZ/ZW sex chromosome system in Imparfinis mirini (Pisces, Siluriformes)
(1997-01-01)
The cytogenetic analysis of 21 specimens of Imparfinis mirini showed the presence of 2n = 58 chromosomes in animals of both sexes. The basic karyotype consists of 22 metacentric and 34 submetacentric chromosomes plus one ...
Phenology, sex ratio, and spatial distribution among dioecious species of Trichilia (Meliaceae)
(Georg Thieme Verlag Kg, 2014)
Sex Determination in Mandibles in the First Year of Life by a Quantitative Approach
(Sociedad Chilena de Anatomía, 2009)
SEX-RELATED DIFFERENCES IN THE ANALGESIC RESPONSE TO THE RAT TAIL IMMERSION TEST
(Associação Brasileira de Divulgação Científica (ABRADIC), 2014)
Men, women...who cares? A populationbased study on sex differences and gender roles in empathy and moral cognition.
Research on sex differences in empathy has revealed mixed findings. Whereas experimental and neuropsychological measures show no consistent sex effect, self-report data consistently indicates greater empathy in women. ...