from The Century Dictionary and Cyclopedia

  • Pertaining to or produced by means of budding or blastogenesis.
  • Concerning or pertaining to origin from germ-plasm, or the substance of germ-cells, as contrasted with origin from the soma or body.


Sorry, no etymologies found.


  • My view is, then, that specific characters are usually not adaptations, that other characters of taxonomic value are some adaptive and some unrelated to conditions of life, and that while non-adaptive characters are due to spontaneous blastogenic variations or mutations, adaptive characters are due to the direct influence of stimuli, causing somatic modifications which become hereditary, in other words, to the inheritance of acquired characters.

    Hormones and Heredity

  • But from the Lamarckian point of view the facts support the conclusion that the condition is the effect of certain mechanical strains, and is of somatic origin, while the correlations here reviewed are entirely unexplained by any theory of mutation or blastogenic origin.

    Hormones and Heredity

  • To assert that all characters are adaptive is as erroneous as to state that all characters are blastogenic mutations, and therefore in their origin non-adaptive.

    Hormones and Heredity

  • The real problem, then, is the sex-limited heredity, and we shall consider later whether in this kind of heredity also there are characters of internal as well as external origin, blastogenic as well as somatogenic.

    Hormones and Heredity

  • In endeavouring to answer this question there are only two alternatives: either the characters are blastogenic -- that is, they arise from some change in the gametocytes occurring somewhere in the succession of cell-divisions of these cells -- or they arise in the soma and are impressed on the gametocytes by the influence of the soma within which these gametocytes are contained -- that is to say, they are somatogenic.

    Hormones and Heredity

  • Adami remarks that Weismann would make the somewhat subtle distinction that the toxins produce these results not by acting on the body-cells but by direct action on the germ-cells, that the inheritance is blastogenic not somatogenic, and calls this 'a sorry and almost Jesuitic play upon words. '

    Hormones and Heredity


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