One chromosomal abnormality that is usually fatal is

Question

Quizplus · Accepted Answer

The addition of an extra autosomal chromosome, also known as a trisomy, can cause various developmental abnormalities and is often fatal. Examples include Down syndrome, which is caused by an extra copy of chromosome 21, and Edwards syndrome, which is caused by an extra copy of chromosome 18. These conditions can lead to severe intellectual disability, organ defects, and reduced life expectancy.

One Chromosomal Abnormality That Is Usually Fatal Is