Multiple choice

Mutations which occur in nature are called

  1. Lethal mutations

  2. Chromosomal mutations

  3. Point mutations

  4. Spontaneous mutations

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Spontaneous mutations occur naturally without any external artificial intervention. They arise from random errors during DNA replication, spontaneous chemical changes in DNA, or natural background radiation. This distinguishes them from induced mutations caused by mutagens like X-rays or chemicals.