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MITOSIS

MITOSIS. animation. Mitosis Vocabulary. Gene a segment of DNA that codes for a protein or RNA molecule. Chromosome structure made of DNA and proteins on which genes are located Chromatin long and thin- genetic material in the nucleus during interphase. Chromatids

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MITOSIS

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  1. MITOSIS animation

  2. Mitosis Vocabulary • Gene • a segment of DNA that codes for a protein or RNA molecule. • Chromosome • structure made of DNA and proteins on which genes are located • Chromatin • long and thin- genetic material in the nucleus during interphase

  3. Chromatids • A shortened and condensed chromosome. Appears during mitosis and meiosis. • Sister Chromatids • 2 identical chromatids joined by a centromere • Centromere • The place at which sister chromatids are attached • Karyotype • a display of all chromosomes arranged according the size, centromere location, and banding pattern.

  4. Homologous Chromosomes- • chromosomes that carry genes for the same traits in the same position along the chromosome • Diploid • When a cell contains two sets of chromosomes (2n) • Haploid • When a cell, such as a gamete, contains one set of chromosomes (n) • Fertilization • The union of an egg and a sperm • (n + n = 2n) • Zygote • The fusion of 2 gametes-- a fertilized egg cell (the first cell of a new individual) • Gametes • an organisms reproductive cells, such as sperm or egg cells (contain half the number of chromosomes)

  5. Mitosis • nuclear division • the same number of chromosomes are distributed into each nucleus. • The chromosome # in the original cells and the resulting cells stays the same…WHY??? • animation

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