Examlex
Draw the structure of (2S,3R)-dichloropentane.Take particular care to indicate three-dimensional stereochemistry detail properly.
Monophyletic
A group of organisms that consists of all the descendants of a common ancestor.
Paraphyletic
A term used in phylogenetics to describe a group of organisms that includes an ancestor but not all of its descendants, contrasting with a monophyletic group.
Polyphyletic
A group of organisms derived from more than one common evolutionary ancestor or ancestral group, indicating they do not share a common lineage.
Phylogenetic Trees
Diagrams that represent the evolutionary relationships among various biological species or other entities, based upon similarities and differences in their physical or genetic characteristics.
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