Skip to main content
SpringerLink
Log in

Behaviour of two mutable genes ofDelphinium ajacis

  • Published:
Journal of Genetics Aims and scope Submit manuscript

Summary

Rose-alpha gene mutates frequently to its purple allelomorph. The results of measurements indicate that the gene mutated with approximately the same rate during twelve cell generations of the development of sepals. No difference in mutability was observed when the gene mutability in the lowest five flowers of racemes was compared with the mutability of the next five flowers of the same racemes. The mutability curves were practically horizontal lines in material differing widely in the frequency of mutability. The rate of mutability in garnetogenesis was probably not higher than the rate of mutability in somatic tissue.

Lavender-alpha gene has a high rate of mutability early and late in ontogeny, and has a low rate of mutability or is constant in the intermediate stages of ontogeny.

The evidence accumulated in studying mutable genes is opposed to the assumption that these genes are composed of two kinds of smaller hereditary units (gene elements), and that the frequent mutability of these genes is due to an assortment of gene elements.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Demerec, M. (1926). “Mimiature-alpha—a second frequently mutating character inDrosophila virilis.”Proc. Nat. Acad. Sci. Washington, D.C., xii, 687–90.

    Article  Google Scholar 

  • — (1927). “Magenta-alpha—a third frequently mutating character inDrosophila virilis.”Ibid. xiii, 249–53.

    Article  Google Scholar 

  • — (1928). “Mutable characters ofDrosophila virilis. I. Reddish-alpha body character.”Genetics, xiii, 359–88.

    Google Scholar 

  • — (1929a). “Genetic factors stimulating mutability of the mutable miniaturegamma wing character ofDrosophila virilis.”Proc. Nat. Acad. Sci. Washington, D.C., xv, 834–8.

    Article  Google Scholar 

  • — (1929b). “Changes in the rate of mutability of the mutable miniature gene ofDrosophila virilis.”Ibid. xv, 870–6.

    Article  Google Scholar 

  • Eyster, W. H. (1924). “A genetic analysis of variegation.”Genetics, ix, 372–404.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Genetics, Carnegie Institution of Washington, Cold Spring Harbor, N. Y., USA

    M. Demerec

Authors
  1. M. Demerec
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Paper read at the meeting of the section for Genetioa and Cytology of the Fifth International Botanical Congress at Cambridge, on 20 August, 1930.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Demerec, M. Behaviour of two mutable genes ofDelphinium ajacis . Journ. of Genetics 24, 179–193 (1931). https://doi.org/10.1007/BF02983852

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02983852

Keywords

Search

Navigation