Study Guide Test 2 w/ answers

Study Guide Test 2 - Chapter 3 1 Be familiar with the graph on page 72 2 What does the arrangement of the bases or the order of"letters determine

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Chapter 3 1. Be familiar with the graph on page 72. 2. What does the arrangement of the bases or the order of “letters” determine? The nature of the gene 3. Define genetic markers. Varies among individuals. Could indicate if one person is prone to disease. 4. Define genetic mutation. Genes spontaneously changing 5. Define natural selection. Traits that are adaptable prosper 6. What biological process help explain genetic diversity or variation within a population? Meiosis what determines the fate of such genetic variation? Environment. 7. Define genotype. Genetic makeup. Define phenotype. Physical traits. 8. How does the environment influence our genes? Allows your genetic makeup to unfold and it shapes behavior. 9. Define penetrance. No gene expresses itself fully 100% of the time. 10. Does predisposition of a trait automatically lead to an unfolding of that trait? No because genes are subject to spontaneous mutation. Chapter 4 1. What are the 4 main parts of a neuron? Dendrites, axons, cell body, axon terminals 2. What is contained in the nucleus of every cell? DNA 3. What is the main function of the dendrite? Transmit information to the cell body. What is the main function of an axon? Send information away from the cell body 4. What is the main function of the synaptic bulbs? Store neurotransmitters 5. What did the neuron doctrine reveal? Neurons are not physically touching 6. Our brain contains how many neurons? 100 billion. How many glia cells? 1 trillion (10 x as many neurons) 7. What is the most number of connections that a neuron can have? 10,000 8. Neurons main function? Used to communicate. Glia cell’s main function? Support the neuron.
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This test prep was uploaded on 04/17/2008 for the course PSYCH psych 250 taught by Professor Rita during the Spring '08 term at Sonoma.

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Study Guide Test 2 - Chapter 3 1 Be familiar with the graph on page 72 2 What does the arrangement of the bases or the order of"letters determine

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