intro Flashcards
Systematics
Study of biological diversity that exists on earth today and its evolutionary history
Classification
visual expression of evolutionary relationships and is critical for plant ID
Filing system for all life
Taxonomy
Science of classification
Age of earth
4.54
Classification is…
A filing system for life
Classifications layers acronom
Kiwis play cricket on flat green surfaces
(Kingdom, Phylum, Class, Order, Family, Genus, Species)
Taxonomy
The science of classification
Classifications are important….
Provide common vocabulary, adds stability, predictive
Classification uses
biological studies, conservation,
what group is the basis for classification
monophyletic
Determining factors for group names
- if the group can be defined by a set of distinctive and is monophyletic
-presence of an obvious morphological character
- group size
- nomenclatural stability a ( classifications are about communication so stability is important)
Systematics are important
Correctly identifying species
Understanding relationships amongst species
Understanding evolutionary history
Reproductive isolation mechanisms maintain species….
But is not always effective.
Hybridisation can
-Reinforce reproductive isolation
_ form hybrid swarm through backcrossing w parents
-Fusion
- Creation of genetic diversity and evolution
most hybrids are sterile