PSYC 2110 Chapter Notes -Empathic Concern, Heritability, Twin

• School: York University
• Department: Psychology
• Course: PSYC 2110
• Professor: Gillian Wu

Document Summary

Genotype: genes that you inherit; phenotype: expression of genes into a measurable characteristic. Zygote: a protective nucleus that surrounds a ovum and sperm in order to protect the egg from being fertilized by more than one sperm (1/20th a size of a head of a pin) Zygote contains the 46 chromosomes which consist of genes (used to build proteins) Dna: can replicate itself, but undoing the coil and the remaining half will guide the replication method (how a zygote becomes a human) Zygote moves from the fallopian tube to the uterus while going through mitosis (all cells contain an exact copy of our 46 chromosomes) Germ cell = sex cells (used to produce gametes sperm/ova) Independent assortment: principal that states each chromosomal pair will segregate independently to all other pairs during meiosis (provides uniqueness) each parent can produce 2^23 combinations from their sperm/ova. Monozygotic twins: happens when a zygote splits into 2 separate, but identical cells.