Species
- Created by: une-meduse
- Created on: 22-05-13 22:39
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- SPECIES
- A species is a group of similar organisms that can interbreed and produce fertile offspring
- Difficult to use this concept with organisms that do not produce sexually
- All organisms have DNA RNA and proteins, these have similar molecular structures where the organisms are related
- The phylogenetic species concept - a group of organisms that have similar morphology, physiology, embryology and behaviour and occupy the same ecological niche
- Any group of organisms with similar haplotypes more than another group are called clades
- A monophyletic group is one that includes an ancestral organism and all its descendant species
- A paraphyletic group includes the most recent ancestor, but not all its decendants
- It is a monophyletic group with one or more clades excluded, for example grouping reptiles excludes birds which are decendants of reptiles
- A species is a group of similar organisms that can interbreed and produce fertile offspring
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