In DNA, the complimentary bases are

Options

A. uracil and adenine, cytosine , cytosine and guanine
B. adenine and thymine , guanine and cytosine
C. adenine and thymine, guanine and uracil
D. adenine and guanine , thymine and cytosine

Explanation

To answer the question regarding the complementary bases in DNA, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Bases in DNA**:
DNA consists of four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G).

2. **Understand Base Pairing**:
In DNA, specific bases pair with each other through hydrogen bonds. This pairing is crucial for the structure of DNA and its function in genetic information storage.

3. **Determine Complementary Pairs**:
The complementary base pairs in DNA are:
- Adenine (A) pairs with Thymine (T)
- Cytosine (C) pairs with Guanine (G)

4. **Explain the Hydrogen Bonding**:
- Adenine and Thymine form two hydrogen bonds between them.
- Cytosine and Guanine form three hydrogen bonds between them.

5. **Summarize the Complementary Base Pairs**:
Therefore, the complementary bases in DNA are:
- Adenine (A) ↔ Thymine (T)
- Cytosine (C) ↔ Guanine (G)

### Final Answer:
The complementary bases in DNA are Adenine (A) with Thymine (T) and Cytosine (C) with Guanine (G).

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