PSYC 289 Lecture Notes - Lecture 5: Neural Tube Defect, Environmental Hazard, Miscarriage
Document Summary
The epigenetic framework the relationship between genes and environment is bidirectional. The environment in uence how the genes are expressed, the genes expressed have an in uence on the environment and our behavior in uences our environment. Example: obesity. eating behavior of the mother affects the gene expression and then she passes that down to her offspring. 266 days (38 week) from conception to birth. Why is it sometimes 40 weeks instead of 38? when a women rst nds out she is pregnant, the due dat given if about 40 weeks from last menstrual cycle, 38 weeks from conception. Period of the zygote- rst two weeks. Starts at conception, during this time the egg is fertilized, goes down to the fallopian tube to the uterus where it is embedded in the uterine wall. Period of the embryo- 3rd to 8th week. Major organs are developing and growing during this period. Period of the fetus- 9th week to birth.
