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Unformatted text preview: F rom zygote to birth Genes- make up genetic code Genetic information about who you become Genes are short segement composed of DNA Sequence of chemical that comprise your genetic endowment Some sequences are functional unitsgenes 20K-25K M itosis vs meiosis M itosis- each chromosome duplicates itself Desinged for cell growth and repair extra 48 chromosomes then split off to form another cell Each new cell contains same number of chromosomes Occurs in all cell EXCEPT the gametes (aka sex cells) Meiosis- cell divide into gametes containing half the number of chromosomes 2 step process: Genetype vs phenotype Single gene pair ingeritance Characteristic incluenced by one pair of genes DOMINANT (B) VS. recessive (b) genes I ncomplete dominance: Dominant gene incomletely dominates recessive gene RED and whitepink Condominance: Neither gene dominates;both traits expressed AB blood Sex linkked inheritance: Characteristics is influenced by sex chromosomes only color blindness Polygenic inheritance:...
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- Fall '08