Evolutionary Biology
转盘内容(21 个选项)
- Shared ancestry among vertebrates means that zebra fish and humans exhibits similar developmental stages.
- Mutations, natural selection
- Evolutionary arms race
- assortative mating and mate choice
- group of individuals belonging to the same species
- group of individuals which can interbreed and produce viable offspring (following the principle of Biological Species Concept) Not evolution.
- causes of evolution
- Increased mortality • Reduced reproductive success
- Reduced mortality • Increased reproductive success
- morphologically similar species
- minor evolutionary changes of populations viewed over a few generations
- major evolutionary events viewed over long period, such as formation of new species
- Four aspects of the natural world which are important mechanism of evolution by natural selection:
- Traits which improve an individuals survival and reproductive success are passed from generation to generation.
- Differences among individuals.
- The reproductive ability of each species has the potential to cause its population to geometrically increase over time.
- Life strategies aims to improve chances of passing genetic material to the next generation.
- produces all offspring within a single reproductive event
- organisms which reproduce in successive years or breeding seasons
- those with distinct breeding seasons
- those that reproduce repeatedly and at any time of the year