Lecture 6

Lecture 6 - Bio 121 Lecture 6 cellular reproduction A....

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Bio 121 Lecture 6 – cellular reproduction A. Information Transfer Life guided by a series of info transfer (DNA) 1. DNA -> messenger RNA -> assembles amino acids into proteins 2. Genetic material is duplicated and transferred to new cell B. Cell Division 1. Linear structure 2. Something that can replicate linear structure simply and accurately 3. Assure 1 copy of each passed to new cell C. Mitosis – eukaryotic Cell division 1. Interphase – period in cells life between division a. Respiration b. Protein synthesis c. Growth d. DNA on chromosome e. Genetic material replicated -> two copies of each chromosome (copies of chromatids attached at centromere 2. Prophase a. Individual chromosomes visible b. Humans – 23 pairs=46 c. Homologous chromosome d. Fruit fly – 4pairs=8 e. Pairs of chromosomes – diploid f. I type of each – haploid (eggs and sperm) 3. Metaphase a. Two chromotids of each chromosome arranged on equatorial plate b. Spindle fiber attached centromeres c. Each chromosome behaves independently
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Lecture 6 - Bio 121 Lecture 6 cellular reproduction A....

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