PSYC 1010 Lecture Notes - Human Genome Project, Twin, Gene Knockout

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: all

Document Summary

Genes are the building blocks of heredity and development: human genome hold 46 chromosomes (23 pairs, sperm and eggs only have 23 chromosomes, when connected adds to 46 chromosomes, males have xy and female xx. Human genome project: published in 2001 which found 25000 genes. 05 to 4% u would look like a monkey. 001 percent difference in genome, your dna would be different than other people. Genotype: specific genetic makeup, present from conception, never changes. Phenotype: observable characteristics, can be altered by other genes, environment: how tall you can grow compared to how tall you actually grow. How genes work: genes are not blueprints they are molecules, these molecules have the ability to direct the assembly of proteins that build the body. Dominant, recessive and polygenic: characteristic displayed if, dominant gene from either parent, two recessive genes (one from each parent, polygenic transmission (multiple gene pairs influence phenotype)