Tumour-Suppressor Genes

Question

Tumour-suppressor genes
A)are frequently overexpressed in cancerous cells.
B)are cancer-causing genes introduced into cells by viruses.
C)can encode proteins that promote DNA repair or cell-cell adhesion.
D)often encode proteins that stimulate the cell cycle.
E)do all of the above.

Accepted Answer

Tumour-suppressor genes are genes that normally act to inhibit cell division and prevent the formation of tumours. They can encode proteins that promote DNA repair or cell-cell adhesion, which helps to prevent mutations and maintain tissue structure.