PSY 3171 Lecture 4: September 18.docx
9 Oct 2014
School
Department
Course
Professor
Document Summary
Current paradigms and integrative approaches: some psychopathology is due to biological issues, such as schizophrenia. Family studies (index cases or probands (when someone has an illness)) Twin studies (use concordance rates) for mz and dz (fraternal: concordance if one twin has it, the other twin has it. Order of the strand, or nucleotide, form genes: genes are the template for the synthesis of amino acids peptides and enzymes (protein). This provides the genetic code (genotype): ie. everyone has the gene for huntington"s disease. But sometimes an error occurs, such as polymorphism, (such as an excess of repeats of ccg). This leads to the expression of things like huntington"s: note that every time a gene repeats, there"s more chance of instability. Thus a later generation may get huntington"s earlier than their parents: genetic vs. hereditary, genetic genes that may or may not express themselves, ie.
