Emil Heitz (1892-1965): chloroplasts, heterochrotamin, and polytene chromosomes
Article Abstract:
Emil Heitz made important contributions to gentics with his role in the discovery of chloroplasts, heterochromatin and polytene chromosomes in Diptera. Heitz discovered a new method of synthesis of heterochromatin from Diptera tissues. Heitz also discovered the heterochromaticity of identical chromosome sections. Artificial breeding to five different type of Drosophila species was done by Heitz to synthesise heterochromatin. The constant structural characters of polytene chromosomes and constancy of polytene bands were also discovered by Heitz.
Publication Name: Genetics
Subject: Biological sciences
ISSN: 0016-6731
Year: 1995
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The identification of transposon-tagged mutations in essential genes that affect cell morphology in Saccharomyces cerevisiae
Article Abstract:
The yeast Saccharomyces cerevisiae develops buds as part of its reproduction and the successful development of these buds is dependent on numerous genes. Transposon mutagenesis was used to establish a large collection of lethal disruption mutations. From the collection, 209 mutants with disruptions that cause aberrant terminal bud formation were characterized. In addition, three previously uncharacterized genes were identified as essential genes in bud morphological development.
Publication Name: Genetics
Subject: Biological sciences
ISSN: 0016-6731
Year: 1996
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