what is down syndrome
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Explanation:
विग्रह के पश्चात सामासिक शब्दों का लोप हो ... समास में दो पद (शब्द) होते हैं।
Answer:
Down syndrome is a condition in which a person has an extra chromosome.
Explanation:
Chromosomes are small “packages” of genes in the body. They determine how a baby's body forms during pregnancy and how the baby's body functions as it grows in the womb and after birth. Typically, a baby is born with 46 chromosomes.