BACKGROUND Puberty is a complex and dynamic period in development during which individuals transition from the juvenile to adult state. Regulated by multiple genetic and endocrine controls, it is characterized by somatic growth and sexual maturation. Sexual precocity is defined as the appearance of secondary sexual characteristics before the lower limit of the normal age for pubertal onset. D...

The sexual system evolved to motivate reproductive acts. As such, its manifestations (e.g., sexual desire and behavior) are not necessarily related to emotional attachments. Still, within romantic relationships, sexual desire can motivate the attachment bonding process and lead to intensely meaningful experiences that affect the quality of a relationship and its fate. In this article, we review...

This article is intended to attract public attention to the fact that people with intellectual disability, despite their delayed sexual development, still remain sexual beings, which is connected with many individual and social consequences. The empirical data collected in this work provides knowledge about biological and psychological conditioning of sexual development of individuals with inte...

Juveniles who have committed a sexual offense (JSOs) are thought to have abnormal sexual development, as well as increased ASD symptoms. In the current study, sexual development and behavior, as well as stability of ASD-like symptoms were assessed in a sample of 44 male JSOs (mean age 24.7 ± 1.5 years) 8 years after their sexual offence. JSOs exhibited less knowledge of sexuality, less positive...

Sexual ornaments are favoured to be both less integrated with other organismal traits for greater expression, and yet more integrated with organismal development and functions to better indicate the physiological quality of an organism. Two conceptual approaches in morphological evolution – the consideration of internal and external processes and the evolution of integration and modularity – ar...

Overview of Normal Sexual Development The purpose of this review is to briefly describe inherited disorders resulting in ambiguous sexual morphology that have been reported in the dog and cat. An understanding of normal development is helpful in formulating a diagnostic plan and reaching a definitive diagnosis. Normal mammalian sexual development occurs in three steps, with each step depending ...

The grey mullet fingerling were imported to Iran in 1997 from Hong Kong and in coastal fish pond of north part of Iran were successfully cultured in order to obtain broodstocks and induce artificial reproduction. Seasonal changes in serum concentrations of Testosterone, 17-β Estradiole (E2), 17-α Hydroxy Progesterone and also the level of calcium, Triglyceride and cholesterol in femal...