CHYS 2P35 Lecture Notes - Lecture 4: Etiology, Startle Response, Natural Disaster
16 Sep 2016
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Father"s sperm + mother"s ovum = zygote with 46 chromosomes in total: 23 from each parent, whole genetic code is within it. The process by which a cell separates chromosomes in its nucleus into two identical cells. Every time it splits, it splits entirely equally into another cell with a genetic code. Made up of dna: has instructions. A genetic created one individual is different from a genetic code of another individual. Chromosomes within sperm cells divide in half before they fertilize an ovum or egg cell. Chromosomes with egg cells divide in half before they are fertilized. The randomness creates variation in the resulting embryo. 23rd pair of (sex) chromosomes last pair: males have x and y, females have x and x. Sex of child determined by father"s sperm. Have instructions: a gene is dedicated to each quality of a person. Direct production of amino acids necessary for forming new cells. Guide cells to develop different parts of body.
