The quartet method is one of the methods for a molecular clock. The method has some advantages over the other methods and some weaknesses against other methods. So, I search about strengths and weakness of the quartet method, if you have any experience or paper, explain about it, please.
I hope those two attachments can help you fatemeh
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3141274/
Sorry, I do not know what you mean by quartet method??
There are methods that use quartets to reconstruct trees.
E.g.:
http://www.tree-puzzle.de/
There are many more similar methods.
But they are not directly related to molecular clocks. Not more than other phylogenetic methods to my knowledge.
There is no "the quartet method". As Christopher said above, quartets are used as a building block of trees and many methods based on them have been proposed for tree inference, including Quartet MaxCut (http://www.ncbi.nlm.nih.gov/pubmed/21030737) and even methods for dealing with the gene tree incongruence, such as SVDQuartets (http://www.ncbi.nlm.nih.gov/pubmed/25104814).
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