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lara [203]
2 years ago
10

Down's syndrome involves a. sex-linked trait, gene mutation, chromosomal abnormality

Health
1 answer:
natali 33 [55]2 years ago
8 0
It involves chromosomal abnormality; w<span>hen the condition is caused by trisomy 21, (down syndrome), the </span>chromosomal abnormality<span> occurs as a random event during the formation of reproductive cells in a parent. The </span>abnormality<span> usually occurs in egg cells, but it occasionally occurs in sperm cells.
I hope this answers your question. =)</span>
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