QABiology › Which of the following statements about the DNA in one of your brain cells is true?
Q

Which of the following statements about the DNA in one of your brain cells is true?

a. Most of the DNA codes for protein.

b. The majority of genes are likely to be transcribed.

c. It is the same as the DNA in one of your liver cells.

d. Each gene lies immediately to an enhancer.

A

Answer: c. It is the same as the DNA in one of your liver cells.

The correct answer is C, the DNA in one of your brain cells is the same as the DNA in one of your liver cells. All the cells of a living organism contain the same DNA, and so the DNA in the brain is the same with that of any other organ or cell throughout the body. The only difference between them is the genes in the DNA code for different cell types.

Not all genes lie immediately next to an enhanced because the genes that are not expressed are repressed before they get to bind with the enhancer, DNA polymerase.

1 year ago
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