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20 August, 02:23

Identify the type of chromosomal abnormality described below. A person has a missing copy of X chromosome. A baby has an extra copy of chromosome 18. A fetus is found to have four copy's of chromosome 1.

1. Aneuploidy

2. Trisomy

3. Polysomy

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  1. 20 August, 02:36
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    Aneuploidy-Missing copy chromosome ☓

    Trisomy-Extra copy of chromosome 18

    Polysomy-Four copies of chromosome 1

    Explanation:

    Aneuploidy is the abnormal number of chromosomes.

    Trisomy is when a particular chromosome is three in number

    Polysomy is when a chromosome may be three or more copies of the chromosome rather than the expected two copies.
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