The term given to each chromosome in a doubled or replicated pair is sister chromatids.

Here's a breakdown:

* Chromosomes are long, thread-like structures made of DNA that contain genetic information.

* Replication is the process by which DNA copies itself before cell division.

* Sister chromatids are the two identical copies of a chromosome that are joined together at the centromere after replication.

During cell division, the sister chromatids separate, and each new cell receives one chromatid from each pair.