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Genetic adaptation to polyploidy in animals: a case study in Australian burrowing frogs Neobatrachus

Listed in ZivaHub and Deakin Research Online and DMU Figshare and HKU DataHub and Swinburne Figshare and DaYta Ya Rona and SUNScholarData and figshare and Loughborough Research Repository and GRANTS Data and UP Research Data Repository — shown once because both records carry DOI 10.6084/m9.figshare.30576644.v10

<p dir="ltr"><b>Whole-genome duplication can be adaptive in the long term but in the short term can impair chromosome segregation and fertility, obstacles polyploids must overcome to regain fitness.

Description

To investigate how animals adapt to polyploidy, we focused on Australian burrowing frogs (genus Neobatrachus), three species of which are polyploid: </b><b><i>N. aquilonius</i></b><b>, </b><b><i>N. kunapalari </i></b><b>and </b><b><i>N. sudellae</i></b><b>.

We assembled a reference genome for diploid </b><b><i>N. pictus</i></b><b> and sequenced 96 individuals from all nine </b><b><i>Neobatrachus </i></b><b>species, finding tetraploid-specific selection on genes with meiotic roles in synaptonemal complex and crossover distribution (SYCE2, PRR19), or chromosome and spindle size (Condensin-2, KifC1). These changes may represent a genetic adaptation in vertebrate polyploids with tetrasomic and mixed inheritance that raises crossover interference and scales chromosome and spindle size to ensure successful chromosomal segregation.

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Finally, we show that adaptive alleles are shared between the tetraploids via interspecific introgression. </b></p>

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Where it is published

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Provenance · 11 source records, 63 field assertions
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Deakin Research Onlineoai:figshare.com:article/3057664411 d agoJSON v1
DMU Figshareoai:figshare.com:article/3057664411 d agoJSON v1
HKU DataHuboai:figshare.com:article/3057664411 d agoJSON v1
Swinburne Figshareoai:figshare.com:article/3057664410 d agoJSON v1
DaYta Ya Ronaoai:figshare.com:article/3057664410 d agoJSON v1
SUNScholarDataoai:figshare.com:article/3057664410 d agoJSON v1
figshareoai:figshare.com:article/3057664410 d agoJSON v1
Loughborough Research Repositoryoai:figshare.com:article/3057664410 d agoJSON v1
GRANTS Dataoai:figshare.com:article/3057664410 d agoJSON v1
UP Research Data Repositoryoai:figshare.com:article/305766449 d agoJSON v1
FieldAssertionExtractorEvidence
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