PSY 2105 Chapter Notes - Chapter 3: Quantitative Trait Locus, Genomic Imprinting, Allosome

• School: University of Ottawa
• Department: Psychology
• Course: PSY 2105
• Professor: Gustavo Gottret

Document Summary

Chromosomes: strands of genetic material dna, each human cell = 23, total. Inside cell"s nucleus, body"s genetic material (dna) organized into chemical strands called chromosomes. In humans, each cell nucleus contains 23 pairs of chromosomes, one from father and one from mom. Members of these pairs similar to one another and carry genes in the same location. One pair consists of xx or xy (cid:1) Cells form 2 groups based on function (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1: body cells. Reproduce by mitosis: forming 2 identical cells, each equipped w 23 pairs of chromosomes, germ cells. Reproduce by meiosis: forming 4 cells w each cell containing only 23 chromosomes, cell divide to form gametes sperm or ova that will combine at conception to form individual. During conception, sperm merges w ovum to form new cell containing 23. During meiosis the x-shaped chromosomes line up and intermix, yielding a. Crossing over results in exchange of genetic material.