Term
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Definition
| the study of how speciation arised |
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Term
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Definition
| A type of kind or appearance of animals |
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Term
| What is the biological species concept? |
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Definition
| A group of individuals that have the potential to interbreed and produce fertile offspring |
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Term
| What are limitation to the biological species concept? |
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Definition
Asexual reproducers Extinct forms of life self-fertile organisms |
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Term
| What are reproductive barriers? |
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Definition
They help keep species as they are 1. Temporal Isolation - breeds in different time 2. Habitat Isolation - breeds in different places 3. Behavioral Isolation - different behaviors 4. Mechanical Isolation - physical features which prevent mating 5. Gametic Isolation - Gamate which do no unite 6. Hybrid Inviability - Hybrid development imparied 7. Hybrid Sterility - hybrid cannot reproduce |
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Term
| What is Allopatric Speciation? Examples? |
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Definition
Speciation with geological isolation example: Geographic separation: two species of fish form from being separated by a wall of dirt no Gene flow is allowed Natural Selection and Genetic Drift plats into the diversity of the population Kepted a species by reproductive isolation |
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Term
| What is Adaptive Radiation? |
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Definition
Has to do with Allopatric Speciation It is when an Ancetral species diverges into many other species Occurs when one species make way to a distant land |
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Term
| What is Sympatrc Radiation? |
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Definition
It is speciation WITHOUT geographic isolation here reproductive barriers evolve first Polyploidy is the most common mechanism for speciation here Polyploidy - having gamates with extra chromosomes due to meiotic errors (plants |
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Term
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Definition
one population speciates together with another because they basically live with another example: parasites |
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Term
| How much genetic change is required for speciation? |
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Definition
| impossible to generalize, can be large or little |
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Term
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Definition
IT can be slow, which is callled Gradualism or it can be fast which is called Punctuated Equilibrium |
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Term
| How do species become species? |
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Definition
By mechanism of speciation allopatric speciation Sympatric speciation Cospeciation |
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