When a particular mutagen identified by the Ames testis injected into mice, it causes the appearance of manytumors, showing that this substance is carcinogenic.When cells from these tumors are injected into othermice not exposed to the mutagen, almost all of the newmice develop tumors. However, when mice carryingmutagen-induced tumors are mated to unexposed mice,virtually all of the progeny are tumor free. Why can thetumor be transferred horizontally (by injecting cells)but not vertically (from one generation to the next)?

When a particular mutagen identified by the Ames testis injected into mice, it causes the appearance of manytumors, showing that this substance is carcinogenic.When cells from these tumors are injected into othermice not exposed to the mutagen, almost all of the newmice develop tumors. However, when mice carryingmutagen-induced tumors are mated to unexposed mice,virtually all of the progeny are tumor free. Why can thetumor be transferred horizontally (by injecting cells)but not vertically (from one generation to the next)?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter15: Genomes And Genomics

Section: Chapter Questions

Problem 12QP: One unexpected result of the sequencing of the human genome was the finding that mutations in a...

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