The most common oncogene abnormality observed in association with colorectal cancer is which of the following?
A.	Overexpression of the N-myc oncogene
B.	Amplification of the K-ras oncogene
C.	Suppression of the erbB oncogene
D.	Amplification of the L-myc oncogene
Answer:B
The most common oncogene abnormality observed in association with colorectal cancer is which of the following?
A.	Overexpression of the N-myc oncogene B.	Amplification of the K-ras oncogene C.	Suppression of the erbB oncogene D.	Amplification of the L-myc oncogene