Karyotype lab ppt
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Karyotype lab ppt

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Karyotype lab ppt Karyotype lab ppt Presentation Transcript

  • copyright cmassengale 1
  • copyright cmassengale 2
  • Chromosome NumberAll cells in the human body (SOMATIC CELLS) have 46 or 23 pairs of chromosomesCalled the DIPLOID or 2n numberGAMETES (eggs & sperm) have only 23 chromosomesCalled the MONOPLOID or 1n number copyright cmassengale 3 View slide
  • NondisjunctionChromosomes may fail to separate during meiosisResulting gametes may have too few or too many chromosomesDisorders: Down Syndrome – three 21st chromosomes Turner Syndrome – single X chromosome Klinefelter’s Syndrome – XXY chromosomes copyright cmassengale 4 View slide
  • copyright cmassengale 2n = 46 5
  • 2n = 46copyright cmassengale 6
  • 2n = 47copyright cmassengale 7
  • 2n = 47copyright cmassengale 8
  • 2n = 47copyright cmassengale 9
  • 2n = 45copyright cmassengale 10
  • copyright cmassengale 11