L20-SexualBehavior

L20-SexualBehavior - Sexual Development and Sexual Behavior...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Sexual Development and Sexual Behavior Reproductive behaviors are sexually dimorphic o Courtship o Mating o Parental behavior o Aggression Sexual Development o 22/23 chromosomes govern physical development independent of sex o 23 rd pair: Sex Chromosomes Sexual Development: Organization What’s Y got to do with it o Embryos are bisexual o Mollerian system: precursor of female internal sex organs o Wolffian system: precursor of male internal sex organs o One set of gonads; Either develop into testes or ovaries o A single gene on the Y chromosome (Sry) produces testis-determining factor Causes gonads to become testes Without Sry, primordial gonads develop into ovaries Testes release Anti-Mullerian Hormone and Androgens to wither away the Mullerian system (Defeminization) The Androgens cause the Wolffian system to develop into vas deferens, seminal vesicles, prostate and it causes primordial external genitalia develop into penis and scrotum (Masculinization)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/09/2008 for the course PSYC 220 taught by Professor Brunges during the Spring '07 term at UVA.

Page1 / 3

L20-SexualBehavior - Sexual Development and Sexual Behavior...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online