Presentation on theme: "Genetics Part II. Nature vs. Nurture What you are born with (your genes) only determines part of how you will develop (nurture) Gene Expression: Genes."— Presentation transcript:
Nature vs. Nurture What you are born with (your genes) only determines part of how you will develop (nurture) Gene Expression: Genes need to be “turned on” or activated to create specific proteins. Genes are influenced by other genes and they are influenced by the environment Genetic Predisposition: May have the genetics for a trait, however, the gene/genes may never be activated. “At-Risk” … you may or may not even have the genes. You control part of your nurture HOWEVER some is out of your control (examples of nurture that is out of your control: Air quality, your mother’s diet while she was pregnant)
Non-disjunction Result of when during Meiosis (the formation of gametes) chromosome pairs do not separate correctly – Thus Mendel’s law of segregation is broken Results in individuals with too many or too few chromosomes Examples: Downs Syndrome (Trisomy 21) and Turners Syndrome
Amniocentesis Using a needle amniotic fluid is removed from the women and tested Much different from an ultrasound or sonogram that only uses sound waves to create a picture of the baby
What is a Pedigree? A pedigree is a chart of the genetic history of family over several generations. A “family tree” Scientists or a genetic counselor would find out about your family history and make this chart to analyze.