PSYB32H3 Lecture 2: PSYB20 Lecture 2
Document Summary
Behavior genetics: contributions of heredity and environment, differences in human behavior, focus on heritability factors, environmental influences play a major role. Methods of study: twin: monozygotic (mz) vs. dizygotic (dz) twins, separated at birth or early in life, genotype constant with varying environments, limitations: (a) small sample (b) lack of control. >mono: same genes >di: share some genes, fraternal. Genotype vs. phenotype: set of genes inherited from parents, observable & measurable expression, examined by psychologists, >geno~ refer to the set of genes the person inherits from their parents. Ovum + sperm = 23 pairs of chromosomes 46 in total. Genes & dna: genetic information contained in deoxyribonucleic acid (dna), chemical bases adenine, thymine, guanine, & cytosine, order of bases determines organism and characteristics, based on protein production. Adenine, guanine, thymine, cytosine (from tope left to bottom right) Genome: entire dna sequence, blueprint for organisms, monomorphic vs. polymorphic genes. (mono~ shared genes /poly~ unique genes that differentiate individuals )
