PSYCH-200 Lecture Notes - Lecture 2: Phenylketonuria, Eyelid, Heredity

• School: Diablo Valley College
• Department: Psychology
• Course: PSYCH-200
• Professor: Bill

Document Summary

Chromosomes & dna chromosomes: threadlike structure in the nuclei of cells that contain genetic material. Dna: molecule composed of four nucleotide bases that is the biochemical basis of heredity sex chromosomes: structure that determines the gender of the fetus (the. 23rd pair) each egg and sperm has 23 chromosomes autosomes: the first 22 pairs of chromosomes. Genes gene: group of nucleotide bases that provides a specific set of biochemical instructions genes regulate the development of all human characteristics and abilities. Genotype vs. phenotype genotype: heredity makeup of an individual phenotype: set of observable features resulting from the interaction between the genes and the environment. Down syndrome (extra 21st chromosome) people with down syndrome usually have almond-shaped eyes and a fold over the eyelid, head and neck and nose are usually smaller than normal. Interaction between heredity and environment (ex: pku and early menstruation) Niche-picking process of deliberately seeking environments that are compatible with one"s genetic makeup.