PSYC 1101 Lecture Notes - Lecture 12: Allosome, Y Chromosome, Phenotype

• School: University of Georgia
• Department: Psychology
• Course: PSYC 1101
• Professor: Johnachee

Document Summary

Dna: a chemical, a molecule, genetic instructions. Chromosomes: long, launched up strands of dns, 23 pairs. Genes (have to be turned on): small sections of chromosomes; they divide up chromosomes. The result of chemical reacting with dna is you. Genes are in part responsible for creating your phenotype. Also are involved in chemical reactions: genotype vs. phenotype. Phenotype: the physical attributes that result from genotype. Genes will always lead to the same phenotype. We have 20,000 genes each, 50 of which are identical to each others. Humans least genetically different from each other in terms of organisms. Identical twins- literally have the same genotype but different phenotype. Genes are regulated (turned on and off) Whether genetics influence something or whether environment influences something. Sex chromosomes come in two different versions- xx, xy. Ex) male and female alligators are same genotypes, but the sex is determined by the temperature of the environment.