BIO 202 Lecture Notes - Lecture 22: Motor Protein, Cleavage Furrow, Prophase

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All cells in any organism are genetically identical: same dna. Step 1 in division of any cell: each daughter cell gets the same amount of dna, other components can be approximately divided (ex. Prokaryotic: organism is 1 cell, 1 dna molecule: bacterial cell division chromosome. Eukaryotic: cell cycle; cells don"t divide constantly; they divide only at a specified time. Think: as you grow, once you become an adult you don"t just keep growing constantly. : eukaryotes: several chromosomes in the nucleus, 1 chromosome= dna + proteins, chromosomes are only visible by microscopy during mitosis, g1 (interphase) Interphase is when the cell is not dividing; it"s just chillin cells divide. Interphase: (g1, s, g2): cells are not dividing: s (interphase) Dna synthesis: g2 (interphase, m= mitotic phase, s phase: dna synthesis, 1. In interphase, dna is too loosely folded to see individual chromosomes in microscope, ball of string .

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