A recombinant DNA is formed when sticky ends of vector DNA and foreign DNA join. Explain how the sticky ends are formed and get joined.

Explanation

To explain how sticky ends are formed and how they get joined in the context of recombinant DNA technology, we can break down the process into several steps:

### Step-by-Step Solution:

1. **Understanding DNA Structure**:
- DNA is composed of two strands that form a double helix. Each strand has a backbone made of sugar and phosphate groups, with nitrogenous bases (adenine, thymine, cytosine, and guanine) attached to the sugar.

**Hint**: Recall the basic structure of DNA and the role of the sugar-phosphate backbone.
...