Question

A gain-of-function mutation qualitatively alters the action of a gene. for example, a gain-of-function mutation may cause a gene to become active in a type of cell or tissue in which the gene is not normally active

Answer 1

 tumor cells differ from their normal counterparts in many respects: growth control, morphology, cell-to-cell interactions, membrane properties, cytoskeletal structure, protein secretion, and gene expression. 

Answer 2

Explanation:

A gain-of-function mutation qualitatively alters the action of a gene. for example, a gain-of-function mutation may cause a gene to become active in a type of cell or tissue in which the gene is not normally active