Which term describes the DNA found in all of an organism's chromosomes?

• A. Plasmid DNA
• B. Nuclear DNA
• C. Mitochondrial DNA
• D. Chloroplast DNA

Answer: (B)

Verified step by step guidance

1. Understand that DNA in an organism can be found in different locations: the nucleus, mitochondria, chloroplasts (in plants), and sometimes in plasmids (mostly in bacteria).
2. Recall that chromosomes are structures located inside the nucleus of eukaryotic cells that carry genetic information.
3. Identify that the DNA contained within these chromosomes is called nuclear DNA because it resides in the nucleus.
4. Recognize that mitochondrial DNA and chloroplast DNA are separate from the chromosomes and are found in mitochondria and chloroplasts respectively, not in the nucleus.
5. Conclude that the term describing the DNA found in all of an organism's chromosomes is nuclear DNA.