.................. is a segment of DNA strand on which a new strand is produced.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a term that describes a segment of a DNA strand that serves as a basis for the production of a new strand.

2. **Identifying Key Concepts**: In molecular biology, DNA replication involves the creation of a new strand based on an existing strand. The existing strand provides the necessary information for the synthesis of the new strand.

3. **Defining the Template Strand**: The strand that serves as the guide for the synthesis of a new DNA strand is known as the "template strand." This strand contains the sequence of nucleotides that will dictate the sequence of the new strand.

...