PSY210H1 Chapter Notes - Chapter 3: Santhi Soundarajan, David Reimer, Sexual Differentiation
Document Summary
Chromosomes: a carrier of genes, one of the 46 molecules of dna (in 23 pairs) that contains the instrucions to make proteins. Father & mother gamete (sperm and egg)(23 each) Meiosis: cell division resuling in gametes resuling in half. Mitosis: cell division resuling in bodily cells that are exact copies of parent cells (plants) First 22 pairs are autosomes and the last pair are sex chromosomes. Polygenic is inherited traits that inluence many genes through cell difereniaion: gene gene, gene environment. Human genome: code: 99. 5% same for any 2 people. Read human genome project in book (google it) Number and visual appearance of the chromosome in the cell nuclei of an organism/species. Inluence of one gene in the allele is greater than the other: dominant: blood a and b and brown eyes. Pair of alleles can be homozygous or heterozygous. Development begins when sperm penetrates ovum (concepion: zygote (egg &sperm) Genotype is geneic info on 23 chromosome pairs.
