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johannsen

johannsen in Medicine

Johannsen Jo·hann·sen (yō-hän'sən), Wilhelm Ludwig. 1857—1927.

Danish botanist and geneticist who was a pioneer in the field of experimental genetics.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Examples from the Web for johannsen
Historical Examples
  • johannsen caused some of the crusaders to be executed, an act strongly reproved by the monkish chroniclers.

  • johannsen worked with the common bean, weighing the seeds or else measuring them.

  • It may be that these small differences are heritable, such as those that form the basis of johannsen's pure lines.

    Mendelism Reginald Crundall Punnett
  • johannsen's work was simplified because he started with pure lines.

  • Some recent experiments by Professor johannsen of Copenhagen set the matter in a different light.

    Mendelism Reginald Crundall Punnett
  • The remaining Jews fled to the palace of the bishop johannsen and to the emperor's castle.

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