Unit 26 Part 1

Define Biological Systematics

Study of the diversification of living forms, both past and present, and the ancestral relationships among living things through time

Define Taxonomy

Developed by Linnaeus in 18th century

Set up a binomial name system

Important part of systematics

How are phylogenetic relationships determined?

Morphological and Molecular Homologies

• In general, organisms that share similar morphologies or similar DNA sequences are likely to be more closely related then organisms with different structures and sequences

Define Anaologus structures

structures that 2 different organisms have that shared essentially the same purpose