THE GENETIC STRUCTURE OF NATURAL POPULATIONS OF DROSOPHILA MELANOGASTER. XIX. GENOTYPE-ENVIRONMENT INTERACTION IN VIABILITY

• DOI: 10.1093/genetics/111.1.43
• Publication Date: 2021-01-06T05:02:18Z
• Authors: Hidenori Tachida; Terumi Mukai
• Keywords: Heterozygote advantage; Polygene; Chromosomal polymorphism

ABSTRACT To investigate whether or not an excess of additive genetic variance for viability detected in southern natural populations Drosophila melanogaster was created by diversifying selection, genotype-environment interaction tested as follows. (1) Two karyotype chromosomes were used: 61 second with the standard and 63 carrying In(2L)t. Their homozygote viabilities larger than 50% average random heterozygotes. (2) The effects two factors (culture media yeasts) examined at three levels (the culture media: tomato, corn banana; yeasts: sake, brewer's baker's). results 16 factorial experiments Cy method same groups relative homozygotes heterozygotes elucidated following findings: there no significant difference between groups, components highly significant, (3) component significantly smaller that homozygotes. From experimental findings previous results, selection acting on polygenes to increase suggested. relation present result protein polymorphism is also discussed.