FERTILITY GENES IN NATURAL POPULATIONS OF DROSOPHILA MELANOGASTER. I. FREQUENCY, ALLELISM AND PERSISTENCE OF STERILITY GENES | Zendy

Chozo Oshima | Zendy; Takao Watanabe | Zendy

Open Access

FERTILITY GENES IN NATURAL POPULATIONS OF DROSOPHILA MELANOGASTER. I. FREQUENCY, ALLELISM AND PERSISTENCE OF STERILITY GENES

Author(s) -

Chozo Oshima,

Takao Watanabe

Publication year - 1973

Publication title -

genetics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.792

H-Index - 246

eISSN - 1943-2631

pISSN - 0016-6731

DOI - 10.1093/genetics/74.2.351

Subject(s) - sterility , biology , genetics , gene , lethal allele , drosophila melanogaster , linkage disequilibrium , population , natural population growth , allele , haplotype , demography , sociology

Three or four percent of the wild flies in natural populations of D. melanogaster have been found to be sterile. An analysis of sterility associated with the second chromosome revealed a much lower frequency of genetically sterile flies. The accumulation of sterility genes in a cage population was proportional to that of lethal genes, as were their equilibrium frequencies in several natural populations. Many sterile chromosomes were associated with low viability due to pleiotropic effects. The number of chromosomes leading to sterility in both sexes was larger than the expectation based on random combination of male and female sterility genes. This suggests that there is some linkage disequilibrium between male and female sterility genes, as well as a pleiotropic effect of single sterility genes. Some sterility genes were maintained in natural and cage populations, and the patterns of persistence of the sterility genes were very similar to those of lethal genes.

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