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Query about evolution of a gene

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Query about evolution of a gene

Postby cytocine » Wed May 26, 2010 9:41 am

HI there,
Actually, I recently found that my gene of interest is, interestingly, two in number in throughout monocot
lineage but not in dicot except glycine. in Glycine, second copy is the product of intragenomic duplication but in monocot these are not the product of intragenomic duplication. my hypothesis is that these genes are orginated in monocot after the separation of dicot and monocots. Am I true?? I have attched the tree for furthur reference
also. Please help me. I would be very grateful to you.
kind regards
cytocine
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Postby JackBean » Wed May 26, 2010 10:12 am

Well, it seems, that the gray versions are more related that the blue ones. Thus the gray has evolved as homologues, but the blue has been lost in dicots or originated in monocots independently.
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
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Postby SelfishGene » Mon May 31, 2010 7:57 pm

Please rephrase your question, it's hard to understand. Are you asking what the common ancestor at terminal node 99 was a monocot or dicot?
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Re:

Postby cytocine » Fri Jul 23, 2010 7:40 am

JackBean wrote:Well, it seems, that the gray versions are more related that the blue ones. Thus the gray has evolved as homologues, but the blue has been lost in dicots or originated in monocots independently.


thanks for your reply. i know the both possibilities but is there any way to test the correct way??
thanks
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Re:

Postby cytocine » Fri Jul 23, 2010 7:44 am

SelfishGene wrote:Please rephrase your question, it's hard to understand. Are you asking what the common ancestor at terminal node 99 was a monocot or dicot?


it;s ovius that common anceter should be a dicot as monocot came into existance after dicot. i want to know that if a gene is selectively duplicated in monocot sowhat would be the probable explainantion of evolution of that gene. i am getting a complex tree so please try to explain the way of evolution of that genes (plz so through the attched figure)
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Postby JackBean » Fri Jul 23, 2010 11:16 am

there's not much to explain. THe genomes of monocots are usually highly redundant with many parts duplicated, so this gene probably evolved in the same way. You can distinguish between the two possibilities by looking to the surrounding genes, whether is their linearity conserved or not.
http://www.biolib.cz/en/main/

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Re:

Postby cytocine » Sat Jul 24, 2010 1:09 pm

JackBean wrote:there's not much to explain. THe genomes of monocots are usually highly redundant with many parts duplicated, so this gene probably evolved in the same way. You can distinguish between the two possibilities by looking to the surrounding genes, whether is their linearity conserved or not.


thanks for your support, bean!
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