PSYB64H3 Chapter Notes - Chapter 5: Ventricular Zone, Neural Tube Defect, Thalamus

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7 Sep 2013
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Genetics and the development of the human brain. Genome: a set of instructions for constructing a human being. Phenotype: the genotype when it interacts with the environmental influence. Chromosomes: our genotype consists of 23 matched pairs of these: each pair contains a chromosome from the mom and dad. Dna (deoxyribonucleic acid): molecules that make up chromosomes. Genes are formed by smaller segments of dna and each one contains instructions for making a particular type of protein. Gene expression: occurs when the genetic instructions are converted into a feature of a living cell. Most of the dna is found in the chromosome, some are found in mitochondria: mitochondrial dna (mdna) originates from the mother, mutates are a regular rate. Alleles: different versions of a particular gene leading to different phenotypically traits: max two versions of an allele but more than two can exist within a population (blood types)

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