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Oct 11 - Genetics

Oct 11 - Genetics - Tuesday Genetics Heritability Genetic...

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Tuesday, October 11, 2011 Genetics Heritability Genetic Base of Intelligence Genetic Disorders Next Time: Statistics Next Week: Evolution & Behaviour Scan: Finish Chapter 4 + Appendix A How do I estimate heritability? Is intelligence heritable? (In reference to heritability coefficient) What is the cause of genetic disorders? ** Email [email protected] in the event of an exam conflict. ** Contribute to online discussion by tomorrow at midnight!! YOU HAVE DARK HAIR (A DOMINANT TRAIT). IF WE EXAMINED YOUR KARYOTYPE, WE WOULD FIND THAT YOUR ALLELES FOR HAIR COLOUR WERE a. homozygous b. heterozygous c. mixed d. on different chromosomes e. a or b above Dominant traits will produce that effect no matter what the configuration is. One can’t tell genotype from phenotype. Polygenetic Effects traits related to action of more than 1 gene or chromosome Heritability h 2 = h 2 = estimate of how much observed variability due to genetic factors alone h 2 = 0.0 (due to Environment) 1
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Tuesday, October 11, 2011 = 1.0 (due to Genes) does not indicate extent to which genes are responsible for expression of trait
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