Chromosoma

, Volume 18, Issue 3, pp 455–466 | Cite as

Comparative DNA values and chromosome complements of eight species of fishes

  • Susumu Ohno
  • N. B. Atkin
Article

Abstract

The present study appears to indicate that a series of polyploidization of the original vertebrate genome took place while vertebrates were still aquatic forms. The polyphyletic evolution of terrestrial vertebrates is suggested. The lung fish revealed close kinship to present-day members of the order Caudata of the class Amphibia. The DNA value was 3,540 per cent that of mammals. The trout had the DNA value similar to that of mammals and also to that of members of the orders Crocodylia and Chelonia of the class Reptilia. The DNA value of the gold fish, on the other hand, was very similar to that of birds and of snakes and lizards as well. It was 50 per cent that of mammals. Flat fishes and the swordtail had the undistinguished diploid complement made of 48 acrocentrics and the lowest DNA value merely 20 per cent that of mammals. They were regarded as the retainers of the original vertebrate genome.

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References

  1. Allfrey, V. G., A. E. Mirsky, and H. Stern: The chemistry of the cell nucleus. Advanc. Enzymol. 16, 411–500 (1955).Google Scholar
  2. Atkin, N.B., and B. M. Richards: Desoxyribonucleic acid in human tumours as measured by microspectrophotometry of Feulgen stain: a comparison of tumours arising at different sites. Brit. J. Cancer 10, 769–786 (1956).Google Scholar
  3. —, G. Mattinson, W. Beçak, and S. Ohno: The comparative DNA content of 19 species of placental mammals, reptiles and birds. Chromosoma (Berl.) 17, 1–10 (1965).Google Scholar
  4. - - and M. C. Baker: A comparison of the DNA content and chromosome number of 50 human tumours. Brit. J. Cancer (in press).Google Scholar
  5. Atz, J. W.: Intersexuality in fishes (chapt. 3, p. 145–232) in intersexuality in vertebrates including man, edit. by C. N. Armstrong, and A. G. Marshall. London and New York: Academic press 1964.Google Scholar
  6. Beçak, W., M. L. Beçak, H. R. S. Nazareth, and S. Ohno: Close karyological kinship between the reptilian suborder Serpentes and the class Aves. Chromosoma (Berl.) 15, 606–617 (1964).Google Scholar
  7. - - and S. Ohno: Intraindividual chromosomal polymorphism in green sunfish (Lepomis cyanellus) as an evidence of somatic segregation. Cytogenetics (in press).Google Scholar
  8. Blanco, A., W. H. Zinkham, and L. Kupchyk: Genetic control and ontogeny of lactate dehydrogenase in pigeon testes. J. exp. Zool. 156, 137–152 (1964).Google Scholar
  9. Deeley, E. M.: An integrating microdensitometer for biological cells. J. Sci. Instr. 32, 263–267 (1955).Google Scholar
  10. Ingram, V. M.: The hemoglobin in genetics and evolution. New York: Columbia University Press 1963.Google Scholar
  11. Makino, S.: A karyological study of goldfish of Japan. Cytologia (Tokyo) 12, 96–111 (1941); - An atlas of the chromosome numbers in animals. Iowa: Iowa State College Press 1951.Google Scholar
  12. Markert, C. L.: Cellular differentiation — an expression of differential gene function. In: Congenital malformations, p. 163–174. The International Medical Congress, New York 1964; - Lactate dehydrogenase isozyme patterns of fish. J. exp. Zool. 159, 319–332 (1965).Google Scholar
  13. Ohno, S., W. Beçak, and M. L. Beçak: X-autosome ratio and the behavior pattern of individual X-chromosomes in placental mammals. Chromosoma (Berl.) 15, 14–30 (1964).Google Scholar
  14. —, C. Stenius, L. C. Christian, W. Beçak, and M. L. Beçak: Chromosomal uniformity in the avian subclass Carinatae. Chromosoma (Berl.) 15, 280–288 (1964).Google Scholar
  15. —, E. Faisst, and M. T. Zenzes: Post-zygotic chromosomal rearrangements in rainbow trout (Salmo irideus Gibbons). Cytogenetics 4, 117–129 (1965).Google Scholar

Copyright information

© Springer-Verlag 1966

Authors and Affiliations

  • Susumu Ohno
    • 1
    • 2
  • N. B. Atkin
    • 1
    • 2
  1. 1.Department of BiologyCity of Hope Medical CenterDuarteUSA
  2. 2.Department of Cancer ResearchMount Vernon HospitalNorthwoodEngland

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