Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
Species |
A population of organisms that do not or cannot mate or have successful offspring with any other species |
2. The fact that bacteria asexually reproduce means it is hard to define their species |
|
|
Homologies |
Structural or chemical characteristics organisms share that indicate common ancestry |
2. The genetic code is a homology all organisms share |
|
|
Analogies |
Similar characteristics organisms seem to share, but that do not indicate common ancestry |
1. Eyes 2. Using genetics many analogies may be uncovered |
|
|
Binomial Nomenclature |
The way of naming species in the Linnean sysem |
1. Homo sapiens 2. Binomial nomenclature helps to distinguish similar species while recognizing their similarities |
|
|
Eubacteria |
A major group of prokaryotic bacteria who are more complex than Archaebacteria |
2. Eubacteria make up the majority of the Monera kingdom |
|
|
Archea |
The simplest group of prokaryotic bacteria who often live in extreme environments |
1. Methanogens 2. An order of Archea need salt to live |
|
|
Protista |
An extremely diverse kingdom of eukaryotes, who need water to live |
2. Protists are thought to be the first eukaryotes |
|
|
Fungi |
A heterotrophic kindgom of mostly multicellular decomposers who reproduce with spores |
2. Although most fungi are multicellular, yeast is unicellular |
|
|
Plantae |
An autrophic group of eukaryotes who develop from embryos and use photosynthesis |
2. Plants are green because of the their chloroplasts |
|
|
Animalia |
A heterotrophic group of eukaryotes whose mostly reproduce sexually, and are capable of motion |
2. Animal cells lack cell walls |
|
|
Clade |
A branch of evolutionary tree consisting of a common ancestor and all the species developed from it |
1. A tree with the ancestor of all apes at the top and continuing down to humans 2. Cladists classify animals to a clade based only on ancestry |
|
|
Coevolution |
When two species of organism evolve do the other species evolving |
1. Giant tortoises and cacti 2. Coevolution means that one species will never make the other extinct |
|
|
Adaptation |
Characteristics that help species better survive |
1. Skin that blends in with the environment 2. Organisms with adaptations will pass their genes on due to natural selection |
|
|
Speciation |
The transformation of a population into a species |
1. Atriplex tridentata becoming a species 2. Since speciation is so slow, it is hard to observe |
|
|
Geographic Isolation |
When a population of a species is separate from other populations |
1. Bird who have flown to a uninhabited island 2. Geographic isolation is a main factor in creating species |
|
|
Adaptive Radiation |
Rapid speciation due to adaptions spreading because of geographic isolation |
1. Darwin's finches adapting to new food sources 2. Adaptive radiation creates many different types of species |
|
|
Common ancestor |
An ancestor two or more species both evolved from |
1. Velociraptor is a common ancestor to a few birds 2. There is one original common ancestor who all life is evolved from |
|
|
Stasis |
When species are in a stable condition and do not evolve |
1. Neoceratodus 2. As we humans have killed off a lot of our predators we may remain in stasis for awhile |
|
|
Gradualism |
A pattern of evolution where species change gradually over long periods of time |
1. An population slowly accumulating mutations over 2 million years 2. Gradualism doesn't explain gaps in the fossil record |
|
|
Punctuated Equilibrium |
A pattern of evolution where populations mostly remain in stasis and then really helpful adaptions promote rapid periods of speciation |
1. A population rapidly spreading a mutation and speciating 2. Researchers at Michigan State University observed punctuated equilibrium |
