試題詳解

2. Which of the following statements regarding "Cancer Genetics" are CORRECT?
(A) Hereditary tumors usually possess loss-of-heterozygosity in proto-oncogenes
(B) All the cells in a female tumor have the same inactive X chromosome, which is because that all the tumor cells are derived from a single progenitor cell
(C) A gain of function mutation in Rb will bypass the restriction point controls
(D) Micro-RNAs are a new class of oncogenic factors because they function to induce errors during DNA replication
(E) Some viruses can via integrating into the human genome to activate the cellular proto-oncogenes and contribute to tumor formation.