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KMID : 0364219760190010015
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Korean Journal of Zoology
1976 Volume.19 No. 1 p.15 ~ p.24
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Frequency and Allelism of Deleterious Genes Concealed in Korean Natural Population of Drosophila: Lethality, Sterility and Visible Mutants
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Choo Jong-Kil
Lee Taek-Jun
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Abstract
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The frequency of the second chromosomes bearing deleterious genes in the Anyang natural population of Korea in Drosophila melanogaster was repeatedly estimated during the period from 1971 through 1973. 1) The frequency of lethal and semilethal chromosomes was calculated to be 28.2%, and the frequencies were maintained without fluctuation for three years. 2) Allelism rate between lethal genes isolanted from each year was 0.77% on the average. The rate of elimination of lethal genes $(IQ^2)$ was estimated to be 0.0008. 3) The frequency of sterile gene on the second chromosomes was estimated to be 9.1% for females, 6.8% for males and 2.0% for both sexes, respectively. 4) Recessive visible mutant genes, namely rbl and bw genes, were frequently extracted when the chromosomes were revealed in homozygous. The frequencies of these mutants were found to be 1.3% for bw genes and 2.7% for rbl genes, respectively.
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