science
Grade-10
Easy
Question
Mutation occurs at the time of:
Cell division.
DNA repair.
RNA transcription.
DNA replication.
Cell division.
DNA repair.
RNA transcription.
DNA replication.
Hint:
The process of formation of two daughter cells.
The correct answer is: Cell division.
- When the normal sequence of the genetic material is altered, the phenomenon is called mutation
- Cell division is the process of producing daughter cells
- During cell division, the contents of the cytoplasm and nucleus multiply
- Inside the nucleus, the DNA will undergo replication
- During replication, errors that occur will be removed by "proof reading mechanism" present in cells
- Failure of this mechanism or due to environmental factors the normal sequence of nucleic acid changes
- Mutation can be due to genetic or environmental factors
- The cause of mutation is called mutagen
- The individual affected is called mutant
- Not all mutations are harmful