PSY 2105 Chapter Notes - Chapter 3: Hypotonia, Quantitative Trait Locus, Down Syndrome
18 Feb 2014
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Document Summary
Genetics: study of the structure and functions of genes: genes: segment of dna on the chromosome that codes for the production of proteins, chromosomes: long strand of dna. Heredity: sum of inherited traits and tendencies. Cell division: each human contains 23 pairs of chromosome, 22 pairs are autosomes, 23rd pair is the sex chromosome. X carries most genetic material, y carries fewer genes: cells form two groups based on function: Body cell: reproduce by mitosis, form the structures of the body. Inside the chromosome: dna: double helix structure that carries genetic information on chromosomes. Composed of 4 bases: a-t, g-c: called base pairs: determines coded information out by the gene. Structural genes: guide the synthesis of proteins. Regulatory genes: controls activities of structural genes: turns structural genes on and off in response to their. The human genome project environment: purpose: determine sequence of base pairs and to identify human genes.
