Gene mutation are those which involve

Options

A. The change in nature and sequence of base triplets of DNA
B. The change in genome
C. The change in all the genes
D. The disapperance of certain part of chromosome

Answer

To answer the question "Gene mutations are those which involve," we can follow these steps:

### Step-by-Step Solution:

1. **Define Gene Mutation**:
- Gene mutations refer to changes in the DNA sequence that make up a gene. These changes can affect how the gene functions.

2. **Identify the Nature of Changes**:
- Mutations can involve alterations in the base pairs that make up the DNA. This can include changes in the sequence of the base triplets (codons) that code for amino acids.

3. **Evaluate the Options**:
- **Change in nature and sequence of base triplet of DNA**: This is a correct statement as mutations involve changes in the DNA sequence.
- **Change in genome**: This is incorrect because while mutations affect genes, they do not necessarily imply a change in the entire genome.
- **Change in all the genes**: This is also incorrect since mutations can affect a single gene or a few genes, not all genes.
- **Disappearance of certain parts of chromosome**: This is incorrect as well; mutations do not typically involve the disappearance of chromosome parts but rather changes in the sequence.

4. **Conclusion**:
- Based on the evaluation of the options, the correct answer is that gene mutations involve a change in the nature and sequence of the base triplet of DNA.

### Final Answer:
Gene mutations are those which involve a change in the nature and sequence of the base triplet of DNA.

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