7.1 Species and Speciation Flashcards
Binomial Nomenclature
Two descriptive words given to identify a species.
Order of taxonomic hierarchy
domain, kingdom, phylum, class, order, family, genus, species
List the 5 kingdoms
Monera, Protista, plantae fungi, Animalia
Species
An evolutionarily independent group.
Biological Species Concept
If two populations do not interbreed in nature, or fail to produce viable offspring.
Prezygotic Isolation
Prevention of individuals from mating and creating a zygote
Temporal (prezygotic)
Breeding at different times
Habitat (prezygotic)
Breed in a different habitat
Behavioral (prezygotic)
courtship displays differ
Gametic Barrier (prezygotic)
Egg and sperm are incompatible
Mechanical (prezygotic)
Genitalia is incompatible
Phylogenetic Tree
A branching diagram that depicts relatedness/distinction among groups
Branches
represent a population throughout time
Nodes
(Where branches come together) are points in time when an ancestral group split into 2 or more descendant groups
Terminal Nodes
At the ends of branches, represent a group living or extinct.