_________is the process by which genetic variations are created through changes in the base sequence within genes resulting in the creation of a new character of trait not found in parental type.

Answer

**Step-by-Step Solution:**

1. **Understanding Genetic Variations**: Genetic variations are changes in the genetic makeup of an organism, which can lead to new traits or characteristics. These variations can arise from changes in the DNA sequence.

2. **Role of DNA**: DNA contains the genetic information of an organism. It is composed of four nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C). The specific sequence of these nucleotides encodes the information needed for the development and functioning of an organism.

3. **Process of Genetic Change**: Changes in the base sequence of DNA can occur due to various factors, including environmental influences or errors during DNA replication. When a nucleotide in the DNA sequence is altered, it can lead to the production of different RNA and, subsequently, different proteins.

4. **Impact of Mutations**: A mutation is a specific type of genetic change where the base sequence of DNA is altered. This alteration can result in the formation of new proteins that may express new traits or characteristics that were not present in the parental generation.

5. **Conclusion**: The process described in the question is known as "mutation." It is the mechanism through which genetic variations are created, leading to new traits that are not found in the parental type.

**Final Answer**: Mutation is the process by which genetic variations are created through changes in the base sequence within genes, resulting in the creation of a new character or trait not found in the parental type.

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