How are 'sticky ends' formed on a DNA strand? Why are they so called ?

Explanation

### Step-by-Step Solution

1. **Understanding Restriction Enzymes**:
- Restriction enzymes are proteins that cut DNA at specific sequences. They are crucial tools in molecular biology for manipulating DNA.
- There are two types of restriction enzymes: exonucleases (which cut DNA from the ends) and endonucleases (which cut DNA at specific internal sites).

2. **Identifying Palindromic Sequences**:
- Certain restriction enzymes, like EcoRI, recognize specific palindromic sequences in DNA. A palindromic sequence reads the same forwards and backwards on complementary strands.
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