Summary
The number of structural genes coding for a sample of electrophoretically detectable enzymes was determined for seven diploid species of Crepis which previously had been shown to vary in DNA/nucleus by seven-fold and to have chromosome numbers ranging from 2N = 6 to 2N = 12. The number of structural genes coding these enzymes was approximately 19 in all of the species examined, suggesting that gene number is conserved.
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Roose, M., Gottlieb, L. Stability of structural gene number in diploid species with different amounts of nuclear DNA and different chromosome numbers. Heredity 40, 159–163 (1978). https://doi.org/10.1038/hdy.1978.15
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DOI: https://doi.org/10.1038/hdy.1978.15
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