Similarly, a mouse which had its own gene controlling development of the eye replaced by the homologous fly gene developed a normal mouse eye.

ECONOMIST: Genetic science

Much of this proprietary DNA is involved in regulating gene activity for example, controlling how much of a protein is produced, rather than changing the nature of the protein itself.

ECONOMIST: Evolution

Sharpening its efficacy, the gene therapy is not activated until a patient takes a pill, controlling how much of the protein is released at what time.

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