| Autor: |
Pinharanda, A, Martin, S H, Barker, S L, Davey, J W, Jiggins, C D |
| Zdroj: |
Heredity; January 2017, Vol. 118 Issue: 1 p78-87, 10p |
| Abstrakt: |
Gene duplications can facilitate adaptation and may lead to interpopulation divergence, causing reproductive isolation. We used whole-genome resequencing data from 34 butterflies to detect duplications in two Heliconiusspecies, Heliconius cydnoand Heliconius melpomene. Taking advantage of three distinctive signals of duplication in short-read sequencing data, we identified 744 duplicated loci in H. cydnoand H. melpomeneand evaluated the accuracy of our approach using single-molecule sequencing. We have found that duplications overlap genes significantly less than expected at random in H. melpomene, consistent with the action of background selection against duplicates in functional regions of the genome. Duplicate loci that are highly differentiated between H. melpomeneand H. cydnomap to four different chromosomes. Four duplications were identified with a strong signal of divergent selection, including an odorant binding protein and another in close proximity with a known wing colour pattern locus that differs between the two species. |
| Databáze: |
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