Results 281 to 290 of about 4,553,166 (361)

Timing of gonadal development and dimorphic expression of sex-related genes in gonads during early sex differentiation in the Yellow River carp

, 2020
The common carp, a gonochoristic teleost fish with an XX/XY sex-determining system, provides an excellent model for studying cyprinidae gonadal sex differentiation.
Mouyan Jiang, Shaoting Jia, Ji Chen, Kuangxin Chen, Wenge Ma, Xingxing Wu, Hongrui Luo, Yongming Li, Zuoyan Zhu, Wei Hu   +9 more
semanticscholar   +1 more source

Roles of estrogens in fish sexual plasticity and sex differentiation.

General and Comparative Endocrinology, 2019
Fish sex could be reversed at the undifferentiated stage of gonad by administration of exogenous estrogen (E2) or blockade of endogenous estrogen synthesis with aromatase inhibitors, which is designated as primary sex reversal (PSR).
Minghui Li, Lina Sun, Deshou Wang
semanticscholar   +1 more source

Abnormal sex differentiation

The Journal of Pediatrics, 1984
Rappel des connaissances actuelles sur les mecanismes de la differenciation sexuelle normale et revue des progres recemment accomplis dans l'analyse et le diagnostic des anomalies de cette differenciation par troubles de la synthese ou du metabolisme de la testosterone ou de l'action des androgenes, anomalies de la differenciation gonadique, presence d'
openaire   +2 more sources

Decoding Dmrt1: Insights into vertebrate sex determination and gonadal sex differentiation.

Journal of Evolutionary Biology
The Dmrt gene family is characterized by a conserved DM domain. It includes nine genes in vertebrates and is crucial to sex determination and sexual differentiation.
Barbora Augstenov'a, Wen-Juan Ma
semanticscholar   +1 more source

Abnormalities of Sex Differentiation

Hormone Research, 1996
Sex differentiation is determined by a cascade of events proceeding from chromosomal sex to the completion of sexual maturation at puberty. Many factors involved in this cascade have been identified. Here we focus on DAX-1, androgen receptor and cytochrome P450c17, and discuss their functions in sex differentiation.
H, Nawata, R, Takayanagi, T, Yanase, S, Ikuyama, T, Okabe   +4 more
openaire   +2 more sources

A novel PDZ domain-containing gene is essential for male sex differentiation and maintenance in yellow catfish (Pelteobagrus fulvidraco).

Science Bulletin, 2018
The sex-determining genes are found to be variable among different fish species. Yellow catfish (Pelteobagrus fulvidraco) is an important aquaculture fish species in China with XX/XY sex-determining type.
Cheng Dan, Qiaohong Lin, Gaorui Gong, T. Yang, Shuting Xiong, Yang Xiong, Peipei Huang, J. Gui, Jie Mei   +8 more
semanticscholar   +1 more source

Sex Determination and Differentiation

New England Journal of Medicine, 2004
This review elucidates the molecular mechanisms of sex determination and sex differentiation with examples from embryology, animal models, and clinical syndromes. Sex reversal, defective masculinization, pseudohermaphroditism, and syndromes involving the gonads and other organs are some of the clinical problems discussed.
David T, MacLaughlin, Patricia K, Donahoe   +1 more
openaire   +2 more sources

SEX DIFFERENTIATION IN AMPHIBIA

Nature, 1946
THE research which is summarized below was based on the well-known investigations of Witschi, who showed that at an early stage of development the amphibian gonad consists of a cortex and medulla. At a later stage, sex differentiation is marked by an increase of cortex relative to medulla or vice versa.
openaire   +2 more sources

Sex Differentiation in Mammals

Nature, 1967
Sex does not appear to be determined by the action of conventional genes. Heterochromatin—the substance of sex chromosomes—does, however, provide some clues as to how sexual differentiation may be brought about.
openaire   +2 more sources

Unisexual Cucumber Flowers, Sex and Sex Differentiation

2013
Sex is a universal phenomenon in the world of eukaryotes. Attempts have been made to understand regulatory mechanisms for plant sex determination by investigating unisexual flowers. The cucumber plant is one of the model systems for studying how sex determination is regulated by phytohormones.
Shu-Nong, Bai, Zhi-Hong, Xu
openaire   +2 more sources