The problem of sexual bipotentiality as exemplified by teleosts.
نویسنده
چکیده
Most of the work on sex differentiation is devoted to studies on amniotes with particular emphasis on mammals. Our present picture of sex differentiation is formed by the contributions of geneticists, embryologists and endocrinologists. For decades there has been a controversy as to whether sex steroids or (hypothetical) inductor substances play a major role in the process of sex differentiation. The discovery of the H-Y antigen has reanimated this discussion. It is proposed that the use of ambisexual teleost species as unique models of sexual organization in vertebrates might help in further studies to elucidate problems that have never been solved. Among these are: how long can a given germ cell retain its sexual bipotentiality and what are the mechanisms restricting its developmental potency to one sex only.
منابع مشابه
Effects of Acceptance-Action and Rumination on Women’s Sexual Function Mediated by Stress Tolerance
Background and Aim: A common problem among married women is related to sexual function. A large percentage of complaints by women referring to consultation centers are about sexual problems. Determination of factors influencing sexual function can help us to find suitable strategies to solve the problem. The purpose of this study was to investigate the effect of acceptance and practice variable...
متن کاملBrain Anatomy and Histology of Orange Spotted Grouper (Epinephelus coioides)
This research was carried out to identify the different layers and cells of orange spotted grouper brain for further toxicological experiments and defects brought by xenobiotics during exposure periods.The anatomy and histology of the brain of orange spotted grouper was illustrated and compared to mammals and other fishes. The preserved structures of teleosts brain species were different as com...
متن کاملA Sociological Study of Sexual Harassment Experience by Women in Workplace (Empirical Test of Routine Activity Theory)
Expended Abstract Introduction: Women have been discriminated and treated violently throughout the history because of their gender. Illustrations of discrimination and violence cover a wide range of sexual harassment. Violence against women has always been a legitimate way of expressing male domination, in other words, a kind of social control that comes directly from the creation of a patriar...
متن کاملA Sociological Study of Sexual Harassment Experience by Women in Workplace (Empirical Test of Routine Activity Theory)
Expended Abstract Introduction: Women have been discriminated and treated violently throughout the history because of their gender. Illustrations of discrimination and violence cover a wide range of sexual harassment. Violence against women has always been a legitimate way of expressing male domination, in other words, a kind of social control that comes directly from the creation of a patriar...
متن کاملبررسی شیوع اختلالات عملکرد جنسی در زنان مراجعه‌کننده به بیمارستان فاطمیه همدان
Introduction: Gender and sexual satisfaction are important aspects of female health and well- being. Reviews from the primary medical care suggest that less than 50% of physicians ask questions about sexual behavior and sexual disorder from their patients. A true understanding of normal responses related to sexual relationship, evaluation and treatment of sexual dysfunctions requires providing ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Reproduction, nutrition, developpement
دوره 22 2 شماره
صفحات -
تاریخ انتشار 1982