PSYO 220 Lecture 3: Jan. 10
14 Jan 2019
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Document Summary
Genes and chromosomes: dna (deoxyribonucleic acid), a molecule that contains the chemical instructions for cells to manufacture various proteins. Genetic variations and similarities: overall, many genes are identical for every human being, some genes vary slightly from one person to another, allele, any of the possible forms in which a gene for a particular trait can occur. Human genome project and hapmap: human genome project, found only about 20,000 genes in humans, the exact number is unknown, hapmap: Is a more recent international project that aims to spot all the variations in the human genome: hapmap has found 11 million variations among the 3 billion chemical pairs in humans. The human genome: genetic diversity, distinguishes each person, genome: Siblings: each sibling gets about 10,000 genes from each parent, millions of variations and billions of combinations are possible, full siblings are not necessary alike. Dizygotic twins (fraternal: originate from one zygote that splits apart very early in development.
