Lecture 2 - Genetics_Student_slides

Lecture 2- - Genetic Basis of Development Lecture 2 Lecture Overview 1 Goal to understand what genes will and will not tell us about developmental

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Unformatted text preview: Genetic Basis of Development Lecture 2 January 12, 2011 Lecture Overview 1. Goal : to understand what genes will and will not tell us about developmental psychology 2. Basic terminology and concepts 3. Patterns of genetic inheritance 4. Video on the Human Genome Project 5. Gene-Environment interactions 6. Focus on the range of environments Terminology 1. Genotype : the complete set of genes that comprise one’s heredity 2. Phenotype : The physical, behavioral, and psychological features that result from the interaction of one’s genes and the environment. (height, weight, depression, extroversion vs. introversion) Human development is the result of genetic and environmental interactions. Terminology continued Chromosome – a threadlike strand located in each cell’s nucleus that carries the genes There are 23 matching pairs of chromosomes in each cell, including: § Autosomes – regular pairs – 22 of the 23 pairs § Sex chromosomes - 23rd pair - determine sex of the child Ø XX = Female Ø XY = Male Father’s sperm determines the sex Terminology continued Chromosomes are made of DNA. § DNA (deoxyribonucleic acid) – a double-helix shaped molecule composed of 4 chemical compounds (adenine, thymine, guanine, and cytosine). § A gene is a segment of DNA along the length of the chromosome that contains the chemical blueprint for making particular proteins . § Proteins – the building blocks of life § Expression – Genes must be “turned on” (often by the environment) in order to form proteins. Terminology continued • The order in which the chemical compounds appear is the code that determines what protein a gene will make....
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This note was uploaded on 02/13/2012 for the course PSYCH 250 taught by Professor Ward during the Winter '08 term at University of Michigan.

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Lecture 2- - Genetic Basis of Development Lecture 2 Lecture Overview 1 Goal to understand what genes will and will not tell us about developmental

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