Evolution
Charles Darwin and Alfred Russel Wallace both independently arrived at this concept.
What is natural selection?
What are recent common ancestors?
What are gram positive bacteria?
Shapes distinct to prokaryotes.
What are coccus, bacillus, and spirillum?
Earliest records of life on earth.
What are stromatolites?
Adaptation cannot occur without this being present in a population.
What is genetic variation?
This term of linnaean classification provides a framework for grouping organisms.
What is binomial nomenclature?
The primary group of photosynthetic bacteria, this phylum is responsible for producing the first oxygen in earth's atmosphere.
What are cyanobacteria?
The method of bacterial reproduction that does not produce genetic variation.
What is binary fission?
The ultimate source of all variation.
What are mutations?
This species concept distinguishes two species based on the degree of genetic exchange between their gene pools.
What is the biological species concept?
Similarity in structures found in two groups sharing a recent common ancestor.
What are homologous structures?
All members of this bacteria group are obligate parasites of animal cells.
What are chlamydias?
Mitochondria are thought to be the descendants of certain alpha proteobacteria. They are, however, no longer able to lead independent lives because most genes originally present in their genome have moved to the nuclear genome. This phenomenon accounts for the movement of these genes.
What is endosymbiosis?
An extreme halophile would be found in this environment.
What is very salty water?
Two groups become separated by a geographical feature and diverge into different species.
What is allopatric speciation?
Characteristics shared by all members of a clade and their common ancestor.
What is a shared ancestral trait?
The largest and most diverse bacteria phylum.
What is proteobacteria?
Bacterial metabolic mode that gets its energy from sunlight and its carbon from ingesting other organisms.
What is photoheterotroph?
This increases a species' "fit" to an environment and may no longer be favorable if the environment changes.
What is an adaptation?
Two related plants flower at different times during the season. This is an example of this type of reproductive barrier.
What is a prezygotic barrier.
A tree containing an ancestor and some, but not all of its descendants.
What is paraphyletic?
Includes the bacterial species responsible for syphilis.
What is spirochetes?
Two modes of metabolism are unique to prokaryotes. One is photoheterotrophs. This is the other.
What are chemoautotrophs?
This type of speciation may come about due to polyploidy.
What is sympatric speciation?