Chromosome after DNA synthesis is called a:

Chromosome after DNA synthesis is called a:

• A. Replicated chromosome
• B. Unreplicated chromosome
• C. Chromatid
• D. Genome

Answer: (A)

When DNA has been copied, each chromosome contains two identical copies held together at the centromere. That structure is described as a replicated chromosome, because replication has produced two sister chromatids that will be separated later during cell division. A chromatid is one of those copies, not the whole chromosome after replication. A genome is the complete set of genetic material in the organism, not a single chromosome. So after DNA synthesis, the chromosome is a replicated chromosome.

When DNA has been copied, each chromosome contains two identical copies held together at the centromere. That structure is described as a replicated chromosome, because replication has produced two sister chromatids that will be separated later during cell division. A chromatid is one of those copies, not the whole chromosome after replication. A genome is the complete set of genetic material in the organism, not a single chromosome. So after DNA synthesis, the chromosome is a replicated chromosome.