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Related Concept Videos

Signs of Puberty01:27

Signs of Puberty

Puberty is a critical phase, typically beginning between the ages of 8 and 13 in girls and 9 and 14 in boys, though timing can vary based on genetics, environmental factors, and overall health. This period is characterized by the development of secondary sexual characteristics and the attainment of reproductive potential. Endocrine changes underpin puberty, with hormonal surges of Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH) instigated by Gonadotropin-Releasing Hormone (GnRH)...
Testosterone: Functions and Regulation01:26

Testosterone: Functions and Regulation

The intricate hormonal interplay essential for male reproductive health begins with the release of gonadotropin-releasing hormone (GnRH) by the hypothalamus. This hormone prompts the pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). LH targets the Leydig cells in the testes, stimulating them to produce and release testosterone. In concert with testosterone, FSH acts on the Sertoli cells within the seminiferous tubules to facilitate the release of...
Human Genetics01:28

Human Genetics

Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The Ratio of X Chromosome to Autosomes02:45

The Ratio of X Chromosome to Autosomes

In most organisms, sex is determined by the ratio of X and Y chromosomes. However, in some organisms, such as Drosophila and C.elegans, sex is determined by the ratio of the number of X chromosomes to the number of sets of autosomes. The Y chromosome in Drosophila is active but does not determine sex. It contains genes responsible for the production of sperms in adult flies.  
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female Drosophila...
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Hormones and Bone Tissue

The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
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Hormonal Control of the Ovarian Cycle

The ovarian cycle is meticulously regulated by the hypothalamic-pituitary-gonadal axis. This cycle orchestrates the release of a mature oocyte, essential for reproduction.
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle.  At puberty, GnRH secretion increases in both frequency and...

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Related Experiment Video

Updated: Jul 3, 2026

Determination of Reproductive Competence by Confirming Pubertal Onset and Performing a Fertility Assay in Mice and Rats
06:38

Determination of Reproductive Competence by Confirming Pubertal Onset and Performing a Fertility Assay in Mice and Rats

Published on: October 13, 2018

Genetic control of pubertal timing.

Beth A Kaminski1, Mark R Palmert

  • 1Division of Pediatric Endocrinology, Rainbow Babies and Children's Hospital, Case Western Reserve University, Cleveland, Ohio, USA.

Current Opinion in Pediatrics
|July 16, 2008
PubMed
Summary

Genetic research is uncovering the basis of abnormal puberty timing, like hypogonadotropic hypogonadism. Further studies are needed to identify genetic factors influencing normal puberty timing in the general population.

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Area of Science:

  • Endocrinology
  • Genetics
  • Developmental Biology

Background:

  • Puberty is a critical life stage for sexual maturation.
  • Pubertal timing varies due to genetic and environmental factors.
  • Understanding genetic influences on puberty is key to modulating the hypothalamic-pituitary-gonadal axis.

Purpose of the Study:

  • To review recent advances in the genetic control of pubertal timing.
  • To identify genetic factors influencing pubertal timing.
  • To highlight areas for future research in pubertal genetics.

Main Methods:

  • Review of genetic analyses.
  • Examination of studies on pathological pubertal timing.
  • Investigation of genetic control in the general population.

Main Results:

  • Genetic analyses are identifying causes of idiopathic hypogonadotropic hypogonadism and Kallmann syndrome.
  • Research is exploring genetic control of puberty timing in the general population.
  • No definitive genetic variants linked to normal pubertal timing variations have been found yet.

Conclusions:

  • Recent advances have been made in understanding the genetic control of pubertal timing.
  • Further research is necessary to fully elucidate the genetic underpinnings of pubertal timing variations.