Question

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

Answer 1

ExIdentify the type of chromosomal abnormality described below.

✔ aneuploidy

A person has a missing copy of the X chromosome.

✔ trisomy

A baby has an extra copy of chromosome 18.

✔ polysomy

A fetus is found to have four copies of chromosome 1.planation:

Answer 2

Aneuploidy-Missing copy chromosome ☓

Trisomy-Extra copy of chromosome 18

Polysomy-Four copies of chromosome 1

Step-by-step 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.