1)what is down's syndrome
2) how many laws of mendel
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Down syndrome (DS) is a genetic disorder appeared due to the presence of trisomy in chromosome 21 in the G-group of the acrocentric region. DS is also known as non-Mendelian inheritance, due to the lack of Mendel's laws.
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1) Down's syndrome is a genetic disorder caused when abnormal cell division results in extra genetic material from chromosome 21.
2) Mendel proposed three laws: Law of Dominance. The Law of Segregation. Law of independent assortment.
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