Behaviour of two mutable genes of Delphinium ajacis

Demerec, Milislav (April 1931) Behaviour of two mutable genes of Delphinium ajacis. Journal of Genetics, 24 (2). pp. 179-193.

DOI: 10.1007/BF02983852


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

Item Type: Paper
Subjects: bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > genes, structure and function
organism description > plant
CSHL Authors:
Communities: The Carnegie Institution Department of Genetics
Depositing User: Elizabeth Pessala
Date: April 1931
Date Deposited: 23 Mar 2017 13:54
Last Modified: 23 Mar 2017 13:54

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