1. Genes that normally prevent cell division are
a. tumor suppressors.
b. transcription factors.
c. proto-oncogenes.
d. oncogenes.
2. The cause of p53-related cancers is
a. failure to repair damaged DNA, allowing the cell to continue
dividing.
b. fetal cells that remain in a child or adult, dividing too
frequently.
c. continual expression of the telomerase gene, which keeps
cells dividing.
d. deletion of cell cycle checkpoint gene.
3. Cancer does not typically follow a Mendelian pattern of
inheritance because it is usually caused by
a. two gene variants, one dominant and one recessive, and no
environmental input.
b. specific combinations of alleles and an environmental
factor.
c. specific combinations of an environmental factor and one
dominant gene variant.
d. genes that cause death before birth.