Abstract

A polyploid series of fern plants has been studied to determine the way in which multiple copies of the genome influence differentiation and development in a higher organism. Certain structural features of the cell, such as cell volume and nuclear volume, increase in response to increasing DNA levels which accompany polyploidy. Organelle-directed metabolic functions, such as respiration and photosynthesis, do not increase with increasing ploidy. In this experimental system, increased amounts of genetic material play an active role in development.

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