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## Some other information to know about trees.   * ***Branch rotation***. Each node in a tree can be rotated/spun around without changing the meaning of the tree. This is known as “branch rotation”.  * ***Clade***. A group of organisms consisting of a single node and all the descendants of that node in a tree and nothing else.  * ***Monophyletic group***. A clade.   * ***Most recent common ancestor*** of a group of taxa. A node in a tree where, going back in time, all of the branches leading up to the taxa in the group join together.  * ***Bootstrapping***. A statistical method used to measure how measure how well a node is supported by all the data being used.   * ***Ingroup***. The group of taxa being studied.  * ***Outgroup***. A taxon that separated in an evolutionary tree prior to the existence of the most recent common ancestor of the ingroup.  diff --git a/layout.md b/layout.md  index 08ceea7..02272c4 100644  --- a/layout.md  +++ b/layout.md 
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General Notes on Bioinformatics.md  General notes on molecular and microbiology.md  General notes on bacterial systematics.md  Other info about trees.md  Isolation.md  16S rDNA Sequencing and Analysis (Organism Identification).md  Organism Identification using 16s rRNA gene sequence.md