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Whole genome genome duplication event in Arachnid evolution

USincognito

a post by Alan Smithee
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Spiders and scorpions evolved after a whole genome duplication event in arachnids. This discovery joins evidence for WGD events in horseshoe crabs (2), jawless fish (2), telost fish (1) and even rainbow trout (1).

https://phys.org/news/2017-07-rare-genome-duplication-spider-evolution.html
Analysis of these genomes revealed that spiders and scorpions evolved from a shared ancestor more than 400 million years ago, which made new copies of all of the genes in its genome, a process called whole genome duplication. Such an event is one of the largest evolutionary changes that can happen to a genome and is relatively rare during animal evolution.​
 

Ophiolite

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No matter how silky smooth the argument is, creationists will likely claim scientists are just spinning lies, building up a web of deceit. They'll claim the hypothesis just doesn't fly.
 
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a post by Alan Smithee
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Points.png
 
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tas8831

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Spiders and scorpions evolved after a whole genome duplication event in arachnids. This discovery joins evidence for WGD events in horseshoe crabs (2), jawless fish (2), telost fish (1) and even rainbow trout (1).

https://phys.org/news/2017-07-rare-genome-duplication-spider-evolution.html
Analysis of these genomes revealed that spiders and scorpions evolved from a shared ancestor more than 400 million years ago, which made new copies of all of the genes in its genome, a process called whole genome duplication. Such an event is one of the largest evolutionary changes that can happen to a genome and is relatively rare during animal evolution.​


The human genome bears the scars of large-scale segmental duplications.

They happen, but it is all "assumptions" and "stories", remember... Evidence shmevidence.
 
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Ophiolite

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Such an event is one of the largest evolutionary changes that can happen to a genome and is relatively rare during animal evolution.
It is probably worth making explicit what you have stated implicitly: such duplication is relatively common in plants, where it is more usually reffered to as polyploidy.

tas88431 mentions partial genome duplication in humans. It has been suggested that two whole genome duplications are responsible for the size and complexity of the vertebrate genome. A pertinent paper in this regard is Dehal and Boore, in PLoS Biology, 2005. Unfortunately I have been unsuccessful in trying to retrieve it via Google Scholar. The link appears, but is reported as faulty. Anyone out there have a copy?
 
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USincognito

a post by Alan Smithee
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It is probably worth making explicit what you have stated implicitly: such duplication is relatively common in plants, where it is more usually reffered to as polyploidy.

tas88431 mentions partial genome duplication in humans. It has been suggested that two whole genome duplications are responsible for the size and complexity of the vertebrate genome. A pertinent paper in this regard is Dehal and Boore, in PLoS Biology, 2005. Unfortunately I have been unsuccessful in trying to retrieve it via Google Scholar. The link appears, but is reported as faulty. Anyone out there have a copy?
There are four different papers discussing the whole genome duplication events in basal agnathans/stem vertebrates. I have links for all of them on my work computer.
 
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Ophiolite

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There are four different papers discussing the whole genome duplication events in basal agnathans/stem vertebrates. I have links for all of them on my work computer.
Cheers. I look forward to seeing them.
 
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