U09 Psych 100 Chapter Notes - Chapter 3.5: Epigenetics, Heritability, Twin Study

• School: WUSTL
• Department: Psychology
• Course: U09 Psych 100
• Professor: Rice Heather, Duchek, Carpenter

Document Summary

Gene expression whether a particular gene is turned on or off; environmental factors may affect it. Determines body"s physical makeup and developments throughout life. Genome master blueprint that provides detailed instructions for everything in body. Chromosome structures within the cell body that are made up of dna, segments of which comprise individual genes; 23 pairs in a cell, one from mom and one from dad. Gene the units of heredity that help determine the characteristics of an organism; a particular sequence of molecules along a dna strand. Specifies an exact instruction to manufacture a distinct polypeptide; 1 or more polypeptides make up a protein the basic chemicals that make up the structure of cells and direct their activities. Human genome project found people have fewer than 30,000 genes. Dominant gene a gene that is expressed in the offspring whenever it is present.