1.The KRAS gene encodes the KRAS protein which functions to promote cell growth and division. A...
1.The KRAS gene encodes the KRAS protein which functions to promote cell growth and division. A single base-pair deletion occurs in exon 4 of the KRAS gene that results in an early stop codon. This mutation results in an unregulated KRAS protein that always sends growth signals.
What is a correct classification of the normal (wildtype) KRAS gene?
A) A tumor suppressor gene
B) An oncogene
C) A tumor activating gene
D) A DNA repair gene
E) A proto-oncogene
2. The KRAS gene encodes the KRAS protein which functions to promote cell growth and division. A single base-pair deletion occurs in exon 4 of the KRAS gene that results in an early stop codon. This mutation results in an unregulated KRAS protein that always sends growth signals.
True or False: A cell would need to have two copies of the KRAS gene mutation described above to have increased growth and division.
A) True
B) False
Homework Answers
1. B) An oncogene. (KRAS gene belongs to the class of genes called oncogenes)
2. B) False
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