PSY 302 Lecture Notes - Lecture 3: Quantitative Trait Locus, Postpartum Period, Axon Terminal
23 Sep 2017
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Chapter 3: biology and behaviour post partum depresson: incidence rate: Body going through a lot of hormone changes consequences. Infants more likely to display fewer emotions, withdraw from contact. Phenotype (both together): observable expression of the genotype. Sex determination: females have xx chromosomes , males have xy chromosome, always the father who determines sex of the offspring, x bearing sperm fertilizes egg becomes xx (female, if y bearing sperm fertizlies egg becomes xy (male) Genotype vs phenotype: genotype: your actual genetic code in your dna, phenotype: the expression of those genes physically manifest, can still vary based on external factors - ex. identical twins have same genotype but different phenotypes. Gene expression: developmental changes: switching genes on and off for development , controlled by regulator genes. Childs environment - childs phenotype: norm of reaction: for any genotype developing - in dif environments = dif outcomes, ex.
