Whole genome genome duplication event in Arachnid evolution

[USincognito]

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]

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.

 

[USincognito]

 

[Jimmy D]

I won't participate in a spider thread.

 

[Ophiolite]

I won't participate in a spider thread.

Drat. How did I miss that one! Kudos.

 

[tas8831]

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.

 

[Ophiolite]

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?

 

[USincognito]

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.

 

[Ophiolite]

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.

 

[USincognito]

Cheers. I look forward to seeing them.

Stem vertebrate whole genome duplications (two of them) leading to the variety of globin genes in modern vertebrates.
2005
Two Rounds of Whole Genome Duplication in the Ancestral Vertebrate
2007
α D -Globin Gene Originated via Duplication of an Embryonic α-Like Globin Gene in the Ancestor of Tetrapod Vertebrates | Molecular Biology and Evolution | Oxford Academic
2011
http://mbe.oxfordjournals.org/content/early/2011/10/04/molbev.msr207.short
2013
http://www.sciencedirect.com/science/article/pii/S1055790312002709

Rainbow trout
https://www.nature.com/articles/ncomms4657

 

[Ophiolite]

Stem vertebrate whole genome duplications (two of them) leading to the variety of globin genes in modern vertebrates.
2005
Two Rounds of Whole Genome Duplication in the Ancestral Vertebrate
2007
α D -Globin Gene Originated via Duplication of an Embryonic α-Like Globin Gene in the Ancestor of Tetrapod Vertebrates | Molecular Biology and Evolution | Oxford Academic
2011
Whole-Genome Duplications Spurred the Functional Diversification of the Globin Gene Superfamily in Vertebrates | Molecular Biology and Evolution | Oxford Academic
2013
Gene duplication, genome duplication, and the functional diversification of vertebrate globins - ScienceDirect

Rainbow trout
The rainbow trout genome provides novel insights into evolution after whole-genome duplication in vertebrates

Excellent! Thank you very much.