PSYCH211 Chapter Notes - Chapter 3: Guanine, Psychopathology, Single-Nucleotide Polymorphism
21 Apr 2016
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When expecting a child, parents are often worried about the health of their child, especially if the family has a history of inherited disease. Gametes (sperm or egg) are produces through meiosis, while other bodily cells are produced through mitosis. At conception, the 23 chromosomes in the sperm merge with the 23 chromosomes in the egg. The 46 chromosomes that result include 22 pairs of autosomes plus 2 sex chromosomes. Each individual chromosome is one molecule of dna. Dna is made up of nucleotide pairs organized in a structure that resembles a spiral staircase. The nucleotide pairs in dna are adenine-thymine and guanine cytosine. A section of dna that provides specific biochemical instruction is called a gene. All of a persons" genes make up a genotype. Phenotype refers to the physical, behavioural, and psychological characteristics that develop when the genotype is exposed to a specific environment.
