Lecture+2 - Genetic Basis of Development Lecture 2 January...

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Unformatted text preview: Genetic Basis of Development Lecture 2 January 10, 2008 Overview Goal : to understand what genes will and will not tell us about developmental psychology Basic terminology and concepts Patterns of genetic inheritance Video on the Human Genome Project Gene-environment interactions Focus on the range of environments Terminology Genotype : the complete set of genes that comprise ones heredity Phenotype : The physical, behavioral, psychological features that result from the interaction of ones genes and the environment Human development is the result of genetic (passed from parents) and environmental interactions. Terminology continued Chromosome A threadlike strand located in each cells 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 23 rd pair determines sex of child XX = Female XY = Male Fathers sperm determines 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 04/06/2008 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 January...

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