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Feminization of com...
Feminization of complex traits in Drosophila melanogaster via female-limited X chromosome evolution
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- Lund-Hansen, Katrine K. (författare)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Evolutionary ecology,Department of Biology,Faculty of Science,University of Sussex
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- Abbott, Jessica K. (författare)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Evolutionary ecology,Department of Biology,Faculty of Science
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- Morrow, Edward H. (Ted) (författare)
- Karlstad University,Karlstads universitet,Institutionen för miljö- och livsvetenskaper (from 2013)
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(creator_code:org_t)
- 2020-06-03
- 2020
- Engelska.
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Ingår i: Evolution. - : Wiley. - 0014-3820 .- 1558-5646. ; 74:12, s. 2703-2713
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Abstract
Ämnesord
Stäng
- A handful of studies have investigated sexually antagonistic constraints on achieving sex-specific fitness optima, although exclusively through male-genome-limited evolution experiments. In this article, we established a female-limited X chromosome evolution experiment, where we used an X chromosome balancer to enforce the inheritance of the X through the matriline, thus removing exposure to male selective constraints. This approach eliminates the effects of sexually antagonistic selection on the X chromosome, permitting evolution toward a single sex-specific optimum. After multiple generations of selection, we found strong evidence that body size and development time had moved toward a female-specific optimum, whereas reproductive fitness and locomotion activity remained unchanged. The changes in body size and development time are consistent with previous results, and suggest that the X chromosome is enriched for sexually antagonistic genetic variation controlling these particular traits. The lack of change in reproductive fitness and locomotion activity could be due to a number of mutually nonexclusive explanations, including a lack of sexually antagonistic variance on the X chromosome for those traits or confounding effects of the use of the balancer chromosome. This study is the first to employ female-genome-limited selection and adds to the understanding of the complexity of sexually antagonistic genetic variation.
Ämnesord
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Nyckelord
- Drosophila melanogaster
- experimental evolution
- intralocus sexual conflict
- sex chromosomes
- sexual antagonism
- Biology
- Biologi
- Drosophila melanogaster
- experimental evolution
- intralocus sexual conflict
- sex chromosomes
- sexual antagonism
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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