Evolution And Classification Flashcards
Evidence of evolution
- Accent organism remains
- Fossil layers
- Similarities in DNA
- Similarities among organisms alive today
What are the forces of evolution?
Mutation, gene flow, genetic drift, natural selection
What is the most accurate evolution theory?
Darwin theory. Natural selection
Speciation -
The evolutionary process by which populations evolve to become distinct species
How can we distinguish one species from another?
By basing on reproductivity
What is the system for classifying species?
That all species belong to a ‘genus’, a ‘family’, an ‘order’, a ‘class’, a ‘branch’, a ‘kingdom’
What is the order of taxa?
Kingdom is always ranked the highest followed by division, class, order, family, genus and species
Binomial nomenclature
Formal system of naming species of living things
Binomial nomenclature. The first part of the name -
The generic name - identifies the genus to which name the species belong
Binomial nomenclature. The second part of the name -
The specific name - identifies the species within the genus
Domains -
The highest taxonomic rank of organisms in the three-domain system
Domain characteristics and differences:
Bacteria: cells do not contain a nucleus
Archaea: cells do not contain a nucleus; they have different cell walls from bacteria
Eukarya: cells contain a nucleus
Kingdom-
A second highest taxonomic rank, just bellow domain
Kingdom characteristics
Cell structure, made of nutrition, made of reproduction and body organisation
What are the kingdoms?
Animal, plant, fungi, protist, monera
