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Thursday, February 11, 2016 • HOMEWORK: None • OBJECTIVE: I will be able to distinguish between traits that are inherited or acquired and create an initial model. • DO NOW: In your own words, define genetics. Doc #1 – Genetic vs. Non-genetic • What are heritable traits and how are they inherited? • Everyone is aware that there are similarities between parents and their children. • Doc #1 has a list of traits that parents might share with their children. • Individually, read each trait and decide on whether it is mostly genetic or mostly not genetic. • Circle you answer choice for each trait. 1. Eye color Genetic 2. Height Genetic 3. Hair color Genetic 4. Knowing French Genetic 5. Ability to ride a bike Genetic 6. Having kidneys Genetic 7. Chance of developing cancer Genetic 8. Having mitochondria in skin cells Genetic 9. Being strong Genetic 10. Being good at football Genetic Not Genetic Not Genetic Not Genetic Not Genetic Not Genetic Not Genetic Not Genetic Not Genetic Not Genetic Not Genetic Doc #1 – Genetic vs. Non-genetic • Number 2: • In pairs, discuss your choices and decide on what characteristics make a trait mostly genetic. • Then write your list of characteristics on the lines. There is not a correct number of characteristics. List as many as you can. • Just because something is not totally determined by genes, it can still be influenced by genes. – Blood pressure is partially heritable and partially environmental. Two people with the same genes related to blood pressure could still differ in their actual blood pressure because of their eating habits, their exercise habits, and so on. – Weight distribution (i.e. location and size of fat reserves) is partially heritable so two people of exactly the same size and weight might have different fat stores i.e. one has a larger gut, the other has larger thighs in part based on their genes. Obviously weight can also be influenced by the environment i.e. diet/exercise. – Fingerprints are only partially heritable. The fetal environment influences them to some degree. Doc #1 – Genetic vs. Non-genetic • #4 - Now that you have characteristics for what makes a trait genetic, develop a model that explains how a genetic trait, like dimples, gets passed on from parents to their children. • Write or draw your model in the box. • #5 - Individually, explain your model in your own words. Doc #1 – Genetic vs. Non-genetic • Now discuss and compare your model with your group. Discuss the points listed on the document. CLOSURE • Pick the best model from your group and briefly describe what that model is.