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What is Chromosome Abnormalities and Syndromes about?
Errors during cell division can cause numerical and structural chromosome abnormalities. Numerical abnormalities result in extra or missing chromosomes, such as Down syndrome which is trisomy 21. Structural abnormalities include deletions, duplications, translocations, inversions, insertions, rings, and isochromosomes. Mosaicism occurs when a post-zygotic mutation results in genetically distinct cell populations within an individual.
- Author
- mary
- Language
- EN