Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Rate-Determining Steps

Rate-Determining Steps

Relating Reaction Mechanisms
In a multistep reaction mechanism, one of the elementary steps progresses significantly slower than the others. This slowest step is called the rate-limiting step (or rate-determining step). A reaction cannot proceed faster than its slowest step, and hence, the rate-determining step limits the overall reaction rate.
The concept of rate-determining step can be understood from the analogy of a 4-lane freeway with a short-stretch of traffic-bottleneck caused due to...

Multi-Step Reactions

Multi-Step Reactions

Chemical reactions often occur in a stepwise fashion involving two or more distinct reactions taking place in a sequence. A balanced equation indicates the reacting species and the product species, but it reveals no details about how the reaction occurs at the molecular level. The reaction mechanism (or reaction path) provides details regarding the precise, step-by-step process by which a reaction occurs. Each of the steps in a reaction mechanism is called an elementary reaction. These...

Testosterone: Functions and Regulation

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...

Reaction Mechanisms

Reaction Mechanisms

Chemical reactions often occur in a stepwise fashion, involving two or more distinct reactions taking place in a sequence. A balanced equation indicates the reacting species and the product species, but it reveals no details about how the reaction occurs at the molecular level. The reaction mechanism (or reaction path) provides details regarding the precise, step-by-step process by which a reaction occurs.
For instance, the decomposition of ozone appears to follow a mechanism with two steps:

Signs of Puberty

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)...

Reaction Mechanisms: Rate-limiting Step Approximation

Reaction Mechanisms: Rate-limiting Step Approximation

The rate-determining step, or RDS, in a chemical reaction is the slowest step that determines the overall reaction rate. It is identified by using the observed rate law and typically involves approximation methods like the RDS approximation or the steady-state approximation.In the RDS approximation, also known as the rate-limiting-step or equilibrium approximation, the reaction mechanism consists of one or more reversible reactions near equilibrium, followed by a slower RDS, and then one or...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Express yourself.

Science (New York, N.Y.)·2026

Same author

Lumping Sexes and Splitting Genders.

Archives of sexual behavior·2025

Same author

Sexual orientation is associated with 2D:4D finger length ratios in both sexes: an updated and expanded meta-analysis.

Frontiers in psychology·2025

Same author

Finger pointing: Why bias against 2D:4D ratios doesn't add up.

Hormones and behavior·2025

Same author

Loss of TRPC2 function in mice alters sex differences in brain regions regulating social behaviors.

The Journal of comparative neurology·2023

Same author

Low Perinatal Androgens Predict Recalled Childhood Gender Nonconformity in Men.

Psychological science·2022

Search research articles

Related Experiment Video

Updated: Jun 13, 2026

Separation of Spermatogenic Cell Types Using STA-PUT Velocity Sedimentation

Separation of Spermatogenic Cell Types Using STA-PUT Velocity Sedimentation

Published on: October 9, 2013

The testosterone two-step is really a minuet.

Dwayne K Hamson¹, Cynthia L Jordan, S Marc Breedlove

¹Neuroscience Program and Department of Psychology, Michigan State University, East Lansing, MI 48824, USA.

|May 4, 2010

Summary

This summary is machine-generated.

Estrogen receptors (ERs) organize male mouse brain development and behavior before birth. Androgen receptors (ARs) enhance these behaviors after birth, showing how ER and AR pathways interact for full masculinization.

More Related Videos

Comparison of Kinetic Characteristics of Footwork during Stroke in Table Tennis: Cross-Step and Chasse Step

Comparison of Kinetic Characteristics of Footwork during Stroke in Table Tennis: Cross-Step and Chasse Step

Published on: June 16, 2021

Combining Behavioral Endocrinology and Experimental Economics: Testosterone and Social Decision Making

Combining Behavioral Endocrinology and Experimental Economics: Testosterone and Social Decision Making

Published on: March 2, 2011

Related Experiment Videos

Last Updated: Jun 13, 2026

Separation of Spermatogenic Cell Types Using STA-PUT Velocity Sedimentation

Separation of Spermatogenic Cell Types Using STA-PUT Velocity Sedimentation

Published on: October 9, 2013

Comparison of Kinetic Characteristics of Footwork during Stroke in Table Tennis: Cross-Step and Chasse Step

Comparison of Kinetic Characteristics of Footwork during Stroke in Table Tennis: Cross-Step and Chasse Step

Published on: June 16, 2021

Combining Behavioral Endocrinology and Experimental Economics: Testosterone and Social Decision Making

Combining Behavioral Endocrinology and Experimental Economics: Testosterone and Social Decision Making

Published on: March 2, 2011

Area of Science:

Neuroendocrinology
Behavioral Neuroscience
Reproductive Biology

Background:

Prenatal hormonal influences on brain development are critical for sexual differentiation.
The distinct roles of estrogen receptors (ERs) and androgen receptors (ARs) in organizing male behaviors require further elucidation.

Discussion:

This study utilizes novel genetic models to dissect the specific contributions of ERs and ARs to male mouse brain and behavioral masculinization.
Findings suggest a sequential action of ERs during prenatal development and ARs during postnatal development in shaping male-typical behaviors.
The interplay between ER and AR signaling pathways is crucial for the complete masculinization of the male mouse brain and associated behaviors.

Key Insights:

Estrogen receptors (ERs) are solely responsible for the prenatal organization of reproductive and territorial behaviors in male mice.
Postnatal activation of androgen receptors (ARs) specifically enhances components of these established behaviors.
A comprehensive model is proposed for the synergistic interaction of AR and ER pathways in male brain and behavioral masculinization.

Outlook:

Further research can explore the molecular mechanisms underlying the interaction between ER and AR signaling.
Investigating similar pathways in other species could reveal conserved or divergent mechanisms of sexual differentiation.
Understanding these hormonal interactions may offer insights into neurodevelopmental disorders and potential therapeutic targets.