One of two identical attached copies of a replicated chromosome is called aMultiple Choicecentromere.chromatin.chromosome.nucleosome.chromatid.

Break Down the Problem

1. Identify the key concepts in the question.
2. Determine the function of the components listed in the options.
3. Recognize the relationship between these components and replicated chromosomes.

Relevant Concepts

• Chromatid: One of the two identical halves of a replicated chromosome.
• Centromere: The region where two sister chromatids are joined, but it is not the name of the chromatids themselves.
• Chromatin: The complex of DNA and protein in which chromosomes are made, but not specifically referring to the replicated unit.
• Chromosome: The entire structure, which is made up of two sister chromatids.
• Nucleosome: A structural unit of chromatin, which consists of a segment of DNA wrapped around histone proteins.

Analysis and Detail

In the context of the question, we specifically refer to "one of two identical attached copies" of a replicated chromosome. Each of these is indeed called a chromatid.

Verify and Summarize

Reviewing the definitions and the relationships:

• The two identical copies form the joined structure of a chromosome post-replication.
• Each copy is a chromatid.

Final Answer

The correct answer is chromatid.