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WonderGenome evolution fact1,804 of 1,961

Polyploidy duplicates whole chromosome sets, and repeated whole-genome duplications have supplied plant lineages with redundancy that can enable divergence, novelty and speciation.

When evolution copies everything

EvolutionBiologyScience

Why it matters

The idea in context

A duplicated genome creates immediate complications: pairing chromosomes, balancing expression and reproducing successfully. Yet it also creates spare gene copies that can divide old work or acquire new functions, and it can isolate a lineage from its diploid relatives. Duplication is not automatic progress; it is a risky surplus from which evolution sometimes makes room to experiment.

Türkçe

Aynı kart, başka bir dilde.

Poliploitlik bütün kromozom takımlarını çoğaltır; yinelenen tam genom kopyalanmaları bitki soylarına farklılaşma, yenilik ve türleşmeyi mümkün kılabilen yedeklilik sağlamıştır.
Evrim her şeyi kopyaladığında

Kopyalanmış genom hemen sorun çıkarır: kromozomları eşlemek, gen ifadesini dengelemek ve başarıyla üremek. Fakat eski işi paylaşabilen ya da yeni işlev kazanabilen yedek genler yaratır; bir soyu diploit akrabalarından da ayırabilir. Kopyalanma otomatik ilerleme değildir; evrimin bazen deney alanı açtığı riskli bir fazlalıktır.

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Background reading: PolyploidyAttribution and context are revised when stronger evidence appears. Corrections are welcome through the editorial page.
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