angelman affliction Essay

Nondisjunction is definitely an error or perhaps failure of the pair of chromosomes to separate adequately during the process of cell department. Any cellular material that are not relevant to those cellular material of lovemaking reproduction such as blood cells, muscle cellular material, etc divided by mitosis. non-disjunction virtually means not really coming apart, during a non-disjunction error the chromosomal segregation results in a great uncharacteristic response to chromosomes. You will find two types of nondisjunction's which could occur, Meiosis I and Meiosis 2. Any nondisjunction event that occurs during Meiosis I are incredibly important due to the most clinical relevant aneuploidies in our human body result in this type of segregation error. Throughout the first step of Meiosis I, bivalents put together and hten follow homologous recombination. During Meiosis II Ovulated eggs become stopped in the second phase till fertilization assists trigger the division of the 2nd meiotic. Much like the segregation events that occur in Mitosis, the sister chromatids consequentially separate in anaphase during meiosis 2. The syndrome that I chose to discuss is usually Angelman Symptoms, I under no circumstances knew what Angelman's was until the medical professionals at SLICE wanted to evaluation my on the lookout for month older for the choromosonal defect. My little girl at 9 months, was still not seated up unsupported, unaided. She had not been making the normal baby sounds and seems that most infants make. Your woman wasn't reaching all of the milestones her peers her age were. Your woman seemed to have got typical indications of Angelmans and we wanted to make certain that we ruled it out. Proximal markers showed reduction to homozygosity of paternal alleles, intermediate guns showed nonreduction, and distal markers reduction, thus recommending a meiosis II nondisjunction event inside the father with two crossovers. This is, to our knowledge, the initial reported case of SINCE due to meiosis II nondisjunction. В (http://www.ncbi.nlm.nih.gov/pubmed/10450868)

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