What is chromosome 21 18 and 13 2024?
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Down syndrome and trisomies 13 and 18 are chromosomal disorders that cause mental retardation and birth defects. Babies with Down syndrome have an extra chromosome No. 21 (trisomy 21) which causes mental retardation and various medical problems involving the heart, digestive tract, or other organ systems.
2023-04-26 18:12:58
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Benjamin Evans
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Down syndrome and trisomies 13 and 18 are chromosomal disorders that cause mental retardation and birth defects. Babies with Down syndrome have an extra chromosome No. 21 (trisomy 21) which causes mental retardation and various medical problems involving the heart, digestive tract, or other organ systems.