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Split Hand/Foot Malformation Associated with 7q21.3 Microdeletion: A Case Report

Aswini Sivasankaran1, Ambika Srikanth2, Pooja S Kulshreshtha2

  • 1Department of Genetics, Dr. ALM PG Institute of Basic Medical Sciences, University of Madras, India.

Molecular Syndromology
|March 30, 2016
PubMed

Keywords:
BAC-FISHChromosomal microarrayDevelopmental delayEctrodactylyHigh-resolution bandingSHFM1

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During meiosis, chromosomes occasionally separate improperly. This occurs due to failure of homologous chromosome separation during meiosis I or failed sister chromatid separation during meiosis II. In some species, notably plants, nondisjunction can result in an organism with an entire additional set of chromosomes, which is called polyploidy. In humans, nondisjunction can occur during male or female gametogenesis and the resulting gametes possess one too many or one too few chromosomes.
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