VB Anatomy

Non-Disjunction in Meiosis: Formation of Trisomy and Monosomy

Non-Disjunction in Meiosis: Formation of Trisomy and Monosomy

Non-Disjunction in Meiosis: Formation of Trisomy and Monosomy

Non-Disjunction in Meiosis: Formation of Trisomy and Monosomy

  • What is Non-Disjunction? Learn how failure of chromosome separation during meiosis I or II leads to aneuploidy.
  • Mechanisms Explained: Clear visuals demonstrate non-disjunction at both meiotic stages, showing the formation of gametes with extra or missing chromosomes.
  • Clinical Correlations: Understand the genetic basis of trisomy (e.g., Down syndrome) and monosomy (e.g., Turner syndrome).
  • Causes of Error: Explore risk factors including maternal age, spindle defects, and chromosomal mispairing.
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