Psychology 3225A/B Lecture Notes - Lecture 4: Pseudoautosomal Region, Turner Syndrome, Y Chromosome

• School: Western University
• Department: Psychology
• Course: Psychology 3225A/B
• Professor: Klaus- Peter Ossenkopp

Document Summary

3225 lecture 4: the genetics of sexual differentiation. Chromosomes are contained in the nucleus barely visible, look like very fine threads. The structure of chromosomes composed of strands of dna and protein. Humans have 46 chromosomes in each cell (23 pairs) Composed of strands of dna that are bound to special proteins that act as a. Every species has its own standard number of chromosomes. Other species have more/ less and it"s not correlated with how smart the animal is. 23 pairs 2 of each chromosome. 1 member is inherited from father and one from mother. Identical to human eye, but positioning of centromere and size can lay them out. Y chromosome: the sperm and the ovum have half the normal amount of chromosomes (sperm contains the male half and ovum contains female half, once they unite, they form the regular 46 chromosomes. Females: two x chromosome, one inherited from each parent (xx)