Biochemistry: What Darwin Didn't Know

Zoologists have long been satisfied with the evolutionary theory that holds that humans and monkeys are closely related. But the theorists always welcome additional evidence, and last week they got some striking chemical proof. Drs. B. H. Hoyer, B. J. McCarthy and E. T. Bolton of the Carnegie Institution demonstrated that the DNA (deoxyribonucleic acid) in human genetic material has many sections that are identical with monkey DNA.

The experiments that the three Carnegie men report in the magazine Science were both delicate and difficult.

DNA molecules are made up of two very...

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