1. The branch of biology that combines systematics (classification of organisms) with experimental and evolutionary methods to study the relationships and origins of living species.
Usage: Also called experimental systematics; Primarily used in academic and research contexts; Singular form: biosystematics (uncountable)

Examples

• Biosystematics uses DNA analysis and breeding experiments to determine how closely related different species are.
• The researcher applied biosystematics methods to clarify the evolutionary history of the plant genus.
• Biosystematics combines field observation with laboratory techniques to study organism classification.
• Modern biosystematics has revealed unexpected relationships between species that appear similar.
• The team employed biosystematics to investigate whether the two populations should be classified as separate species.