546710
Description
Flashcards by jennabarnes12387, updated more than 1 year ago
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Created by jennabarnes12387
almost 11 years ago
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| Question | Answer |
| what is polyploidy? | when a new species originate when a mistake in cell division resulted in an extra set of chromosomes |
| what is allopolypoid? | a biological barrier where a new species can only mate with others of its new species but not with its parent species even though they are similar |
| what is sympatric speciation? | when speciation occurs in populations that life in the same area. this can happen through mutation, sexual selection and habitat differentiation. |
| What is a hybrid zone? | when two species interact that dont have complete reproductive barriers meet in an area and mate so that at least some offspring have DNA from both ancestry |
| what is punctuated equilibria? | static periods in species evolution with punctuations of sudden change |
| what is cladistics? | when organism are divided into groups based on ancestry called clads |
| what is monophyletic? | a clad that includes the ancestor and all decendants |
| what is paraphyletic? | when a clad contains the ancestor but only some ancestors |
| what is polyphyletic? | a clad that has distant species but not a common ancestor |
| tempora species? | species that breed at different times of the year or times for the day |
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