PSY 23500 Lecture Notes - Lecture 2: Sickle-Cell Disease, Quantitative Trait Locus, Twin Study
27 Jan 2019
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Document Summary
The biology of heredity: sickle cell anemia, difficult to pass through capillaries, recessive allele, genetic material, 23 pairs of chromosomes, 22 pairs of autosomes, 1 pair of sex chromosomes, genotype, phenotype. Singe gene inheritance: alleles, homozygous same, heterozygous different, dominant, recessive. Inherited disorders: triggered when a child inherits two recessive alleles, examples, sickle cell anemia, cystic fibrosis, phenylketonuria, born with too many or too few damaged chromosomes, examples, down syndrome extra 21st chromosome, extra sex chromosome. Behavioral genetics: behavioral genotypes reflect polygenic inheritance (involves many genes, rely on twin studies and adoption studies, twin studies, monozygotic. Identical and fraternal: adoption studies, adoptive children, biological parents, and adopted parents, personality, mental abilities, psychological disorders, and attitudes. Paths from genes to behavior: heredity and environmental interact throughout development, genes can influence the kind of experiences the child is exposed to, environmental influences make children within a family different. Nature vs nuture: involves both nature and nuture throughout all development.
