PSY 111 Chapter Notes - Chapter 8: Karyotype, Guanine, Cytosine
Document Summary
Uses dna as evidence to free people wrongly convicted of crimes. Dna testing is standard part of court cases. Extremely accurate way to match crime scene evidence to perpetrators. Hereditary molecule that is passed from parents to offspring. Serves as the instruction manual for how to build an individual. Found in the nucleus of eukaryotic cells. In the form of a chromosome - single dna molecule wrapped around proteins. We have 23 pairs: 1-22 = autosomes, 23 = gender (male xy, female xx) One chromosome is from the dad and the other from mother. Composed of nucleotides - consists of a sugar, a phosphate, and a base (either adenine, thymine, cytosine or guanine) A goes with t - have two hydrogen bonds, and c goes with g - have three hydrogen bonds. The particular sequence of nucleotides makes each person unique.
