1. The diagrams (A and B) below represent the two common types of cancer genes; one diagram illustrates mutation/s in a typical tumor suppressor gene and the other illustrates mutation/s that change a proto-oncogene to an oncogene. No mutant alleles One mutant allele No mutant alleles One mutant allele Two mutant alleles Mutation Mutation Mutation A Normal cell division Excessive cell proliferation B Normal cell division Normal cell division Excessive cell proliferation 1a. Identify which type (tumor suppressor or proto-oncogene to an oncogene) is illustrated by each diagram (A and B) and describe the differences. 1b. Discuss which of the two illustrations above show a cancer gene with allele/s that acts recessively, and which shows a gene with allele/s that act in a dominant fashion.

Human Anatomy & Physiology (11th Edition)
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ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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1. The diagrams (A and B) below represent the two common types of cancer genes; one diagram
illustrates mutation/s in a typical tumor suppressor gene and the other illustrates mutation/s that change a
proto-oncogene to an oncogene.
No mutant alleles
One mutant allele
No mutant alleles
One mutant allele
Two mutant alleles
Mutation
Mutation
Mutation
A Normal cell division
Excessive cell proliferation
B Normal cell division
Normal cell division
Excessive cell proliferation
1a. Identify which type (tumor suppressor or proto-oncogene to an oncogene) is illustrated by each
diagram (A and B) and describe the differences.
1b. Discuss which of the two illustrations above show a cancer gene with allele/s that acts recessively,
and which shows a gene with allele/s that act in a dominant fashion.
Transcribed Image Text:1. The diagrams (A and B) below represent the two common types of cancer genes; one diagram illustrates mutation/s in a typical tumor suppressor gene and the other illustrates mutation/s that change a proto-oncogene to an oncogene. No mutant alleles One mutant allele No mutant alleles One mutant allele Two mutant alleles Mutation Mutation Mutation A Normal cell division Excessive cell proliferation B Normal cell division Normal cell division Excessive cell proliferation 1a. Identify which type (tumor suppressor or proto-oncogene to an oncogene) is illustrated by each diagram (A and B) and describe the differences. 1b. Discuss which of the two illustrations above show a cancer gene with allele/s that acts recessively, and which shows a gene with allele/s that act in a dominant fashion.
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