PSYC 1101 Chapter 3: Chapter 3
Document Summary
Each of the cell carries a code in its chromosomes. When genes are turn on it creates protein molecules and make up your heredity. Genome the complete instructions for making an organism, consisting of all the genetic material in that organism"s chromosomes. The study of environmental influences on gene expression that occur without a dna change. Epigenetic marks are the molecules that trigger or block genetic expression. It can be affected by diet, drugs, stress, and other experiences. Embryo the developing human organism from about 2 weeks after fertilization through the second month. The outer cells become placenta the life- link transferring nutrition and oxygen between embryo and mother. Next 6 weeks begin to form and function, heart begins to beat. 9weeks, it would look like a human, aka fetus. Teratogen is an agent, such as chemical or virus, that can reach the embryo or fetus during prenatal development and cause harm.
