The point mutation A to G,C to T,C to G,T to A in DNA are

Options

A. transversion, transition, translocation, frame shift respectively
B. transition, transition, transversion, transversion respectively
C. transition only
D. frame shift (gibbersish) metations only

Answer

To solve the question regarding the types of point mutations (A to G, C to T, C to G, T to A) in DNA, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Point Mutation**:
- Point mutations are changes that occur at a single nucleotide position in the DNA sequence. They can result in the substitution of one base for another.

2. **Identify the Types of Nucleotide Bases**:
- Nucleotides in DNA are classified into two categories:
- **Purines**: Adenine (A) and Guanine (G)
- **Pyrimidines**: Cytosine (C) and Thymine (T)

3. **Classify the Given Mutations**:
- We need to analyze each mutation provided in the question:
- **A to G**: Both A and G are purines. This is a **transition mutation**.
- **C to T**: Both C and T are pyrimidines. This is also a **transition mutation**.
- **C to G**: C is a pyrimidine and G is a purine. This is a **transversion mutation**.
- **T to A**: T is a pyrimidine and A is a purine. This is also a **transversion mutation**.

4. **Summarize the Types of Mutations**:
- Based on the analysis:
- A to G: Transition
- C to T: Transition
- C to G: Transversion
- T to A: Transversion

5. **Final Answer**:
- Therefore, the types of mutations for the given changes are:
- Transition, Transition, Transversion, Transversion.

### Answer:
The point mutations A to G, C to T, C to G, T to A in DNA are classified as:
- Transition, Transition, Transversion, Transversion.