Name any two methods used to introduce recombinant DNA into host cell.

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Recombinant DNA**: Begin by defining recombinant DNA. It is a modified DNA molecule created through recombinant DNA technology, which allows for the insertion of specific genes to achieve desired traits.

2. **Need for Gene Transfer**: Recognize that to create a recombinant organism, the recombinant DNA must be introduced into a host cell. This process is essential for the expression of the desired gene.

3. **Methods of Gene Transfer**: Various methods exist for introducing recombinant DNA into host cells. These methods can vary depending on the type of host cell (plant or animal) and the vector used.

...