PSYCH 115 Lecture Notes - Lecture 26: Psych, Cell Nucleus, Genetic Predisposition
Document Summary
Systemic (influences cannot be considered out of context) Causes cannot be considered out of context. One-dimensional models provides of a single cause of psychopathology. Multi-dimensional models are systemic and often interdisciplinary. A system of different reciprocal influence interact in complex ways to yield the major casual. Genes are long molecules of dna that are located at various chromosomal sites within the cell nucleus. The dna molecular structure of genes is referred to as a double helix or spiral ladder. The first 22 pairs of chromosomes program the development of the body and brain. The last pair, called the sex chromosomes, determines sex phenotype. A dominant gene is one of the pair of genes that determines a particular trait. A recessive gene, by contrast, must be paired with another recessive gene to determine a trait. Genes seldom determine our physical development in any absolute way and the same is true for psychopathology.
