Answer:
This very long molecule of DNA is called chromosome.
Step-by-step explanation:
- Chromosome is a 'DNA molecule' that contains part or all of the genetic material of an organism.
- The 'three-dimensional genome structure' of chromosome plays a vital role in 'transcriptional regulation'.
- Prokaryotes have less sequence-based chromosome structure than eukaryotes.
- The recombination of chromosome during meiosis and successive reproduction plays a significant role in 'genetic diversity'.
- Chromosomes are normally visible under microscope during the metaphase of cell division. Chromosomes are the key elements of cell division.