Introduction Mitosis is a series of events that produce two identical cells from one parent cell. Mitosis only involves somatic or body cells that contain.

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Presentation transcript:

Introduction Mitosis is a series of events that produce two identical cells from one parent cell. Mitosis only involves somatic or body cells that contain 46 chromosomes in the nucleus Sexual gametes undergo “meiosis” Mitosis is a part of the cell cycle

Cell Cycle

Nucleic Acids and DNA

DNA Replication Semi-conservative replication DNA strands unwind – Helicase Primase enzyme forms “RNA primer” DNA polymerase – Positions correct DNA nucleotides – One strand “continuous” RNA primer replaced DNA ligase spices pieces of “lagging strand” Animation

Chromosomes Chromosomes are made of chromatin Chromatin – DNA + histone proteins – Units: nucleosomes 8-histone proteins + DNA Genes – Segments of DNA that contain heriditary coding sequences

Mitosis – Events

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