BIO LAB 1

Systematics; study of relationships, classification, and diversity of organisms

Includes → nomenclature (biologically naming), classification, methodologies, genetics, compartive methology, embryology, and behavior

Phylogeny; evolutionary history of species or groups

Dichotomous key; tool used to identify organisms based on shared characteristics

-uses fixed sequences of observations from general to specifc

-be really specific

-continue until single organism is in a group

Taxonomy; involves naming and classifying organisms in hierarchy concerned with naming and classification

Classification of living things

Domain - Eukarya

Kingdom- Animalia

Phylum- Chordata

Class- Mammalia

Order- Carnivora

Family- Felidae

Genus- Panthera

Species- Panthera pardus

Domains

-largest division

-all other subdivisions are subordinate

- based on shared evolutionary descent

-Bacteria, Archea, and Eukarya

Kingdom

-second largest division

-Bacteria (eubacteria), archea (archeabacteria), protista, plantae, fungi, and anamilia

Phylogenic Relationships

-all life forms are related by common ancestry and descent

-can be based on morphological data, phsiological data, molecular data, or all three

-Today they are usually constructed by DNA sequence data

Cladistics

-shared derived characteristics between organism to show relationships over time

-single branch of the phylogenic tree

-Broad to specific