How does the mode of evolutionary divergence affect reproductive isolation?
When divergent populations interbreed, the outcome will be affected by the genomic and phenotypic differences that they have accumulated. In this way, the mode of evolutionary divergence between populations may have predictable consequences for the fitness of their hybrids, and so for the progress o...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Peer Community In
2023-01-01
|
| Series: | Peer Community Journal |
| Online Access: | https://peercommunityjournal.org/articles/10.24072/pcjournal.226/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1825206434119286784 |
|---|---|
| author | De Sanctis, Bianca Schneemann, Hilde Welch, John J. |
| author_facet | De Sanctis, Bianca Schneemann, Hilde Welch, John J. |
| author_sort | De Sanctis, Bianca |
| collection | DOAJ |
| description | When divergent populations interbreed, the outcome will be affected by the genomic and phenotypic differences that they have accumulated. In this way, the mode of evolutionary divergence between populations may have predictable consequences for the fitness of their hybrids, and so for the progress of speciation. To investigate these connections, we present a new analysis of hybridization under Fisher's geometric model, making few assumptions about the allelic effects that differentiate the hybridizing populations. Results show that the strength and form of postzygotic reproductive isolation (RI) depend on just two properties of the evolutionary changes, which we call the "total amount" and "net effect" of change, and whose difference quantifies the similarity of the changes at different loci, or their tendency to act in the same phenotypic direction. It follows from our results that identical patterns of RI can arise in different ways, since different evolutionary histories can lead to the same total amount and net effect of change. Nevertheless, we show how these estimable quantities do contain some information about the history of divergence, and that — thanks to Haldane's Sieve — the dominance and additive effects contain complementary information.
|
| format | Article |
| id | doaj-art-c51520795c144b749b4b0fd532ce8984 |
| institution | Kabale University |
| issn | 2804-3871 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Peer Community In |
| record_format | Article |
| series | Peer Community Journal |
| spelling | doaj-art-c51520795c144b749b4b0fd532ce89842025-02-07T10:16:50ZengPeer Community InPeer Community Journal2804-38712023-01-01310.24072/pcjournal.22610.24072/pcjournal.226How does the mode of evolutionary divergence affect reproductive isolation?De Sanctis, Bianca0https://orcid.org/0000-0002-0648-4224Schneemann, Hilde1https://orcid.org/0000-0002-7295-9734Welch, John J.2Department of Genetics, University of Cambridge, Cambridge CB2 3EH, UK; Department of Zoology, University of Cambridge, Cambridge CB2 3EJ, UKDepartment of Genetics, University of Cambridge, Cambridge CB2 3EH, UKDepartment of Genetics, University of Cambridge, Cambridge CB2 3EH, UKWhen divergent populations interbreed, the outcome will be affected by the genomic and phenotypic differences that they have accumulated. In this way, the mode of evolutionary divergence between populations may have predictable consequences for the fitness of their hybrids, and so for the progress of speciation. To investigate these connections, we present a new analysis of hybridization under Fisher's geometric model, making few assumptions about the allelic effects that differentiate the hybridizing populations. Results show that the strength and form of postzygotic reproductive isolation (RI) depend on just two properties of the evolutionary changes, which we call the "total amount" and "net effect" of change, and whose difference quantifies the similarity of the changes at different loci, or their tendency to act in the same phenotypic direction. It follows from our results that identical patterns of RI can arise in different ways, since different evolutionary histories can lead to the same total amount and net effect of change. Nevertheless, we show how these estimable quantities do contain some information about the history of divergence, and that — thanks to Haldane's Sieve — the dominance and additive effects contain complementary information. https://peercommunityjournal.org/articles/10.24072/pcjournal.226/ |
| spellingShingle | De Sanctis, Bianca Schneemann, Hilde Welch, John J. How does the mode of evolutionary divergence affect reproductive isolation? Peer Community Journal |
| title | How does the mode of evolutionary divergence affect reproductive isolation? |
| title_full | How does the mode of evolutionary divergence affect reproductive isolation? |
| title_fullStr | How does the mode of evolutionary divergence affect reproductive isolation? |
| title_full_unstemmed | How does the mode of evolutionary divergence affect reproductive isolation? |
| title_short | How does the mode of evolutionary divergence affect reproductive isolation? |
| title_sort | how does the mode of evolutionary divergence affect reproductive isolation |
| url | https://peercommunityjournal.org/articles/10.24072/pcjournal.226/ |
| work_keys_str_mv | AT desanctisbianca howdoesthemodeofevolutionarydivergenceaffectreproductiveisolation AT schneemannhilde howdoesthemodeofevolutionarydivergenceaffectreproductiveisolation AT welchjohnj howdoesthemodeofevolutionarydivergenceaffectreproductiveisolation |