a) Oncogenes arise from mutations in proto-oncogenes. b) Tumor suppressor genes normally interact with growth-inhibiting factors to block cell division. c) More than 100 oncogenes and 15 tumor suppressor genes have been identified. d) Oncogenes were first discovered in mouse models for cancer.

a. Products of oncogenes inhibit mitosis. b. Benign tumors invade normal tissue. c. Malignant cells migrate. d. Cancer cells lose the ability to divide. e. The parent cell of the tumor contains a single mutation in a single checkpoint gene.

\\ A.oncogenes \\ B. proto-onco genes \\ C.tumor suppressor genes \\ D. telomerase \\ E. opsin genes Which of the following statements about eukaryotic chromosomes is false? a) eukaryotic chromosomes have free ends b) telomeres contain protein-coding genes c) telomerase lengthens telomeric DNA d) telomere shortening may contribute to cell aging ...

C. genes that are involved in accelerating or enhancing growth. D. genes that encode proteins that control oncogenes. E. rarely implica; Mutant versions of genes that are normally involved in promoting the cell cycle are known as _____. A) Tumor suppressors B) Proto-oncogenes C) Oncogenes D) Malignant genes E) Attenuators.

A. oncogenes are recessive gain-of-function mutations B. BRCA1 is an oncogene C. genes involved in the cell cycle following a mutation become oncogenes D. oncogenes inhibit cyclin dependent kinases How do mutations in a proto-oncogene and …

A. oncogenes are recessive gain-of-function mutations B. BRCA1 is an oncogene C. genes involved in the cell cycle following a mutation become oncogenes D. oncogenes inhibit cyclin dependent kinases or otherwise halt the cell cycle

RNA tumor viruses carry oncogenes; DNA tumor viruses carry tumor suppressor blocking genes. True False Explain. True or false: DNA mismatch repair is used to fix damage made to DNA by UV light and chemicals True or false: The untranslated regions (UTR's) are found in the introns and are often important for stability of a transcription

Proto-oncogenes: Oncogenes are gain-of-function mutations associated with cancer progression because they improperly enhance the expression of genes that promote cell proliferation or inhibit apoptosis. They are derived from normal cellular genes called proto …

Classify the following statement as describing proto-oncogenes or tumor suppressor genes: "Mutations that increase activity of these genes may lead to cancer." Mutations to proto-oncogenes result in a) extra chromosomes in the daughter cells. b) a slowing down of the cell cycle. c) tumour-suppressing genes. d) cancer-causing genes called oncogenes.

Proto-Oncogenes: Proto-oncogenes are a group of normal cells that have varying specific functions, including acting to encode proteins that act in cell division, cell stimulation, and halt cell death. When a proto-oncogene is mutated, it can turn on a cell that is not meant to be turned on, and this is called an oncogene.