please tell me the definition....its for my biology research!
2007-03-13 22:25:41 · 4 answers · asked by Alfie_mcg 1 in Science & Mathematics ➔ Biology
Hi, hope this helps:
.proto-oncogene is an oncogene in its non-cancerous state, it is a normal gene. An Oncogene is a cancer causing gene. Proto-oncogenes can be transformed into oncogenes by initiators (mutagens)
A cancer causing virus may pick up an oncogene when it reproduced in a previous host. It may pass this on to its new host. Or if it lacks an oncogene, the virus may introduce a control element that causes the cell to become cancerous. These control elements are called enhancers and a cell can turn cancerous if a normally inactive gene is transcribed or when a gene becomes overactive.
2007-03-13 23:07:40 · answer #1 · answered by Piggy56 4 · 0⤊ 0⤋
An oncogene is a modified gene, or a set of nucleotides that codes for a protein, that increases the malignancy of a tumor cell. Some oncogenes, usually involved in early stages of cancer development, increase the chance that a normal cell develops into a tumor cell, possibly resulting in cancer.
2007-03-14 05:35:47 · answer #2 · answered by alwan 2 · 0⤊ 0⤋
oncogenes are responbile for cancer. onco refers to cancer. eg. oncogology = study of cancer
2007-03-14 06:28:26 · answer #3 · answered by beano007 2 · 0⤊ 0⤋
go to the link below!
2007-03-14 05:29:30 · answer #4 · answered by pigley 4 · 0⤊ 0⤋