Which statement about DNA in one of your brain cells is true?

• A. Brain cells contain the same DNA as other cells in the body.
• B. The DNA in brain cells is different from the DNA in liver cells.
• C. Brain cells have more DNA than skin cells.
• D. The DNA in brain cells is organized into a single circular chromosome.

Answer: (A)

Verified step by step guidance

1. Understand that DNA is the genetic material found in almost all cells of an organism, and it carries the instructions for the development, functioning, growth, and reproduction of all known living organisms.
2. Recognize that in multicellular organisms, such as humans, almost all cells contain the same DNA. This is because all cells originate from a single fertilized egg cell through the process of cell division.
3. Consider the fact that different cell types, like brain cells, liver cells, and skin cells, have the same DNA but express different genes. This differential gene expression allows cells to perform specialized functions.
4. Note that the organization of DNA in human cells is in the form of linear chromosomes, not circular chromosomes. Circular chromosomes are typically found in prokaryotes, such as bacteria.
5. Conclude that the statement 'Brain cells contain the same DNA as other cells in the body' is true, as all cells in a human body generally contain the same genetic information, despite their different functions.