science
Grade-10
Easy

Question

Down’s syndrome is an example of:

  1. Aneuploidy

  2. Deletion mutation

  3. Polyploidy

  4. Point mutation

Hint:

Down's syndrome is caused by an abnormal number of chromosomes in a haploid set.

The correct answer is:

Aneuploidy


    • Babies with Down syndrome have an extra copy of one of these chromosomes, chromosome 21. The medical term for extra copies of chromosomes is "trisomy."
    • Down syndrome is also called trisomy 21. This extra copy can alter the baby's body and brain development, causing mental and physical problems for the baby. This aneuploidy causes this abnormality.

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