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What do the different branch lengths if the tree indicate? What do numbers above nodes indicate?

What do the different branch lengths if the tree indicate? What do numbers above nodes indicate?

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In phylogenetic tree, the branches indicate the path of transmission of genetic information from one generation to the next. So, the branch lengths indicate genetic change. The longer the branch, the more divergence has occurred.

Nodes are the points at the ends of branches that represent sequences at various points in evolutionary history. The numbers next to each node represent a measure of support for the node. These are generally numbers between 0 and 1, where 1 represents maximal support.

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