Q.33 Mutations occuring in cell other than genn cells are known as:
l. Silent mutation
2. Somatic mutation
3. Missense mutation
4. Point mutation
Mutations in cells other than germ cells (sperm/egg) are somatic mutations, affecting only the individual, not offspring. These arise post-fertilization in body cells.
Mutation Types Defined
Mutations change DNA, with specific terms based on location and effect.
Somatic mutations occur in non-reproductive (somatic) cells like skin or liver. Unlike germline mutations, they aren’t inherited.
Option Explanations
Each choice is evaluated:
-
Silent mutation: Wrong. This changes DNA but not protein (due to codon redundancy); can occur anywhere.
-
Somatic mutation: Correct. Defines mutations in body cells excluding germ cells, key in cancer, aging.
-
Missense mutation: Wrong. Swaps one amino acid in protein; type of point mutation, not location-specific.
-
Point mutation: Wrong. Single nucleotide change; broad category including silent/missense, occurs in any cell.
Key Mutation Categories
| Type | Location/Effect | Inherited? |
|---|---|---|
| Somatic | Non-germ cells | No |
| Germline | Reproductive cells | Yes |
| Silent | No protein change | Varies |
| Missense | Amino acid swap | Varies |
