Abstract
Recent findings show that traits which influence speciation in the melanogaster subgroup of Drosophila can be determined by relatively few loci and/or be sex-linked. Using backcrosses between D. simulans and D. mauritiana, we show that an acoustic mating signal which plays an important role in courtship (the interpulse interval of the 'lovesong') has a polygenic determination. There is no evidence of single genes of large effect, a disproportionate contribution of the sex chromosome or epistasis. The probability of finding single genes with a large effect on sexual isolation may vary with the mode of signalling involved.
Original language | English |
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Pages (from-to) | 378-382 |
Number of pages | 5 |
Journal | Heredity |
Volume | 77 |
Issue number | 4 |
Publication status | Published - 1 Oct 1996 |
Keywords
- courtship song
- Drosophila
- interpulse interval
- speciation