Several genes are responsible for preventing cells from dividing when conditions are not right. Two examples are tumor suppressor genes and proto-oncogenes. Which of the following accurately compares tumor suppressor genes and proto-oncogenes? Select one: a. Both tumor suppressor and proto-oncogenes prevent the spread of cancer by targeting and destroying existing cancer cells b. Proto-oncogenes code for growth factors, while tumor suppressor genes inhibit cell division of damaged cells. c. A person who has both tumor suppressor and proto-oncogenes will always develop cancer. d. When a proto-oncogene mutates, it becomes a tumor suppressor gene.
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Step 1: Tumor suppressor genes inhibit cell division of damaged cells. Show more…
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Which of the following accurately compares tumor suppressor genes and proto-oncogenes? Choose the answer. A person who has both tumor suppressor and proto-oncogenes will not always develop cancer. When a proto-oncogene mutates, it becomes an oncogene, not a tumor suppressor gene. Both tumor suppressor genes and proto-oncogenes prevent the spread of cancer by targeting and destroying existing cancer cells. Proto-oncogenes code for growth factors, while tumor suppressor genes inhibit the cell division of damaged cells.
Joanna Q.
Normally, cells exhibit what we call density-dependent inhibition, which inhibits cell division when too many cells are present in a given area (high density). A mutation in what type of gene(s) could lead to a malfunction of this process, and possibly to cancer? Select one: a. Tumour suppressing genes or oncogenes could be mutated, resulting in the cell cycle being stopped at check points. b. A gene coding for the enzyme responsible for the duplication of DNA. c. Tumour suppressing genes or oncogenes could be mutated, resulting in the cell cycle not being stopped at checkpoints. d. A gene coding for proteins of the mitotic spindle.
Sri K.
Cancer causing genes are called _________ . a. transformation genes b. tumor suppressor genes c. oncogenes d. mutated genes
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