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Psychology 1000 Lecture : Genetics of Behaviour

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greytermite197
16 Jan 2012
School
Western University
Department
Psychology
Course
Psychology 1000
Professor
Dr.Mike

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PSYCH 1000 Full Course Notes
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PSYCH 1000 Full Course Notes
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Document Summary

Karyotype: genetic blueprint: humans: 23 pairs 22 autosomes + sex chromosome (xx = xy = ) Genes (dna) rna protein molecules (sequences of amino acids) The influence of genes is through protein synthesis there are no genes for a particular attribute. Genes determine range of possibilities, but not degree of expression. White crowned sparrow must hear adult song between 7th and 60th day of life. Outward characteristics may not indicate underlying genetic contribution: ex. Dominant: produces the effect in either homozygous or heterozygous mode. Recessive: produces effect ion only the homozygous mode. Eye colour: brown dominant hair colour: dark dominant. * not always one of the other sometimes a blend. Sickle cell anemia heterozygous yields both * Traits related to action of more than 1 gene or chromosome. Estimate of how much observed variability due to genetic factors alone: h2 = 0. 0 (due to environment, h2 = 1. 0 (due to genes)

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Related Questions

43. Consider the following scenario: A group of psychologists are studying the genetic influence on intelligence. They find that identical twins (raised together) have a heritability coefficient of .88 and that fraternal twins (raised together) have a heritability coefficient of 42. Based solely on these findings, the psychologists can legitimately conclude that A) intelligence is entirely shaped by genetics B) intelligence is entirely shaped by the environment C) intelligence is impacted be genetics D) intelligence is not impacted by the environment E) intelligence is not at all impacted by genetics

43. Consider the following scenario: A group of psychologists are studying the genetic influence on intelligence. They find that identical twins (raised together) have a heritability coefficient of .88 and that fraternal twins (raised together) have a heritability coefficient of .42. Based solely on these findings, the psychologists can legitimately conclude that A) intelligence is entirely shaped by genetics B) intelligence is entirely shaped by the environment C) intelligence is impacted be genetics D) intelligence is not impacted by the environment E) intelligence is not at all impacted by genetics

45. A chromosome is: A) synonymous with the term "gene" B) a coiled molecule of DNA that is covered by protein C) the portion of the gene that carries the hereditary blueprint D) the observable characteristics produced by a given genetic makeup E) synonymous with the term "phenotype"