PSYC 211 Chapter Notes - Chapter 9: Prenatal Development, Testicle, Secondary Sex Characteristic

• School: McGill University
• Department: Psychology
• Course: PSYC 211
• Professor: Jonathan Britt

Document Summary

Sexually dimorphic behaviors = behavior that has different forms in males and in females. All cells have 23 pairs of chromosomes. Chromosomes constituted by dna contain genetic info that makes us who we are. Production of gametes implicate a special form of cell division. Cells contain one member of each 23 pairs of chromo, when ovum and sperm join, they share their 23 single chromo to reconstitute the 23 pairs of chromo. 22 of our 23 pairs of chromo determine the organism"s physical development. The last pair determines the gender (aka sex chromosomes). Development of the sex organs (p. 219: gonads o o o o o o o o o o o o o o o the same). Three general categories of sex organs: gonads, internal sex organs and external genitalia. Gonads (testes and ovaries) are the 1st to develop. They produce ova or sperms and they secrete hormones.