The distribution of spontaneous mutations on quantitative traits and fitness in Drosophila melanogaster
Article Abstract:
A completely homozygous population of Drosophila melanogaster was divided into two mating groups and maintained for 46 generations. Sternopleural bristle number, wing length and width were observed every 4-5 generations. Analysis reveals variations of specific means from the total group mean. The variation is traced to an individual mutation with a relatively large effect on at least one trait. No relationship was established between degrees of mutational effects on traits and fitness. The results support the theory defining population size independence from the rate of differentiation.
Publication Name: Genetics
Subject: Biological sciences
ISSN: 0016-6731
Year: 1992
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Effective size of populations under selection
Article Abstract:
The effective size of populations subjected to continued selection are approximated by an equation, which includes assertive mating and possibility of partial full-sib mating. This new equation is obtained from the general equation, which involves the constant number of breeding individuals. The equation includes a constant associated with the deviation from the Hardy-Weinberg proportions.
Publication Name: Genetics
Subject: Biological sciences
ISSN: 0016-6731
Year: 1995
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Spontaneous changes in Drosophila melanogaster transposable elements and their effects on fitness
Article Abstract:
Results show that most spontaneous mutations affecting transposable elements are merely rearrangments with no effect on fitness.
Publication Name: Heredity
Subject: Biological sciences
ISSN: 0018-067X
Year: 1999
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