He/she is talking about genetic disorders. Interesting topic. An oncologist is a cancer specialist so I don't know the specific cancer disorder but I'm sure there is one.
Which of the following incorrectly matches the term with its location?
A. DNA is found in a chromosome.
B. Chromosomes are found in the nucleus of a cell.
C. Genes are located in a nucleotide.
D. Nitrogen bases are located in the central rungs of a DNA ladder.
ANSWER
C. Genes are located in a nucleotide.
I think its ADP because it breaks off the third phosphate.