Read the following text and answer the following questions on the basis of the same:
Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen.
Give one word for the following:
Type of mutation that arise due to change in a single base pair of DNA.

Options

A. Point mutation
B. Somatic mutation
C. Deletion
D. Insertion

Explanation

To answer the question regarding the type of mutation that arises due to a change in a single base pair of DNA, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Mutation**:
- Mutation is defined as a sudden, discontinuous variation in the genotype of an organism due to changes in its chromosomes and genes.

2. **Identify the Types of Mutations**:
- According to the provided text, mutations are categorized into three main types: gene mutation, chromosomal aberrations, and gametic mutation.

3. **Focus on Gene Mutation**:
- Since the question specifically asks about a change in a single base pair, we need to focus on gene mutations, as these involve alterations at the DNA level.

4. **Differentiate Types of Gene Mutations**:
- Gene mutations can further be classified into point mutations and gross mutations. Point mutations specifically refer to changes that occur at a single point in the DNA sequence.

5. **Define Point Mutation**:
- A point mutation is a type of gene mutation that involves a change in a single base pair of DNA. This can occur through substitution, deletion, or insertion of a nucleotide.

6. **Conclude with the Answer**:
- Therefore, the type of mutation that arises due to a change in a single base pair of DNA is called a **Point Mutation**.

### Final Answer:
Point Mutation