Probably 3 %. a mother could give birth to a child with Trisomy 21 at any age because Trisomy 21 is a mutation and mutations happen all the time. Not all mutations are as Down Syndrome. A child born to two homozygous brown eyed parents could be born with blue eyes even if no one in the family had blue eyes. The child would develop blue eyes due to mutation.
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I,3,4,7 hope this will help
It can either undergo mitosis or function as a unicellular body.
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Answer: "The cell membrane is not a solid structure. It is made of millions of smaller molecules that create a flexible and porous container."
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