Chapter 23 - Evolution of Genes and Genomes - 23.3 - Lateral Gene Transfer and Gene Duplication Can Produce Major Changes - 23.3 Recap - Learning Outcomes - Page 500: 2

1) Both copies of the gene retain their original functions, sometimes resulting in a different amount of gene product produced by the organism. 2) Both copies of the gene may retain the ability to produce the original gene product, but the gene expression may diverge depending on tissue type and stages of development. 3) One copy of the gene may be deactivated or eliminated from the genome altogether. 4) One copy of the gene may retain its function while the other copy accumulates enough substitutions to adopt a different function.

1) Both copies of the gene retain their original functions, sometimes resulting in a different amount of gene product produced by the organism. 2) Both copies of the gene may retain the ability to produce the original gene product, but the gene expression may diverge depending on tissue type and stages of development. 3) One copy of the gene may be deactivated or eliminated from the genome altogether. 4) One copy of the gene may retain its function while the other copy accumulates enough substitutions to adopt a different function.