example of convergent and divergent evolution
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Answers:Convergent evolution: Two different species adapt similarly when they share similar niches. Australia has several examples. Tasmanian tigers are very similar to wolves or dogs. The marsupial lion had many features similar to cats They even had a saber toothed version of a marsupial similar to saber toothed cats. divergent evolution: When species separate into dissimilar niches, they evolve quite differently. The formation of limbs in early amphibians compared to their fish ancestors is an example. Adaptive radiation: When a species spreads in to different niches it forms multiple species. A classic example is the Darwin's finch. The common ancestor split into several species as it occupied the various niches. Coevolution is where two species evolved together. Many species of plants produce flowers that only bats can fertilize. The bats evolved to take advantage of the flowers and the flowers rewarded the bats with nectar and flowering at night. Coevolution of humans and cows: The cows allowed us to exploit land that wasn't suitable to crops. They greatly increase our food supply. Perhaps in the future we will use them in many different ways. The way they convert cellulose to sugar in the guts with microbes could lead to the easy conversion of grass into alcohol to power our cars.
Answers:convergent -An example of convergent evolution is the similar nature of the wings of insects, birds, pterosaurs, and bats. All four serve the same function and are similar in structure, but each evolved independently and not from a common winged ancestor. The striking similarities between hummingbird moths and hummingbirds is another example of convergent evolution. divergent- Divergent evolution is the accumulation of differences between groups which can lead to the formation of new species, usually a result of different groups of the same species adapting to different environments, leading to mutations. It can be seen in some higher-level characters of structure and function that are readily observable in organisms. For example, the vertebrate limb is one example of divergent evolution. The limb in many different species has a common origin, but has diverged somewhat in overall structure and function adaptive -A classic example is the evolution of a fourth cusp in the mammalian tooth. This trait permits a vast increase in the range of foodstuffs which can be utilized, with species able to specialize on feeding on a range of foodstuffs. The trait arose a number of times in different groups during the Cenozoic, and in each instance was immediately followed by an adaptive radiation. Birds find other ways to provide for each other, ie. the evolution of flight opened new avenues for evolution to explore, initiating an adaptive radiation. co-evolution - Examples of co-evolution include pollination of Angraecoid orchids by African moths. These species co-evolve because the moths are dependent on the flowers for nectar and the flowers are dependent on the moths to spread their pollen so they can reproduce. The evolutionary process has led to deep flowers and moths with long probosci.
Answers:Co evolution is when two different species influence each others evolution. Human males and females are NOT different species so a relationship between a human male and a human female is NOT co-evolution. If it was a male and a female of different species then it would be considered co-evolution but the if the male and the female were different species the relationship could not be sexual because different species cannot have offspring together.
Answers:Assuming that you know the definitions, here are some examples: Convergent evol: WINGS of insects, birds and bats. (thes are also called analogous structures). Also, hummingbird moths & hummingbirds. Divergent evol: Wings of a bat, the humam forearm and fingers,the flipper of a whale ,wing of a bird , foreleg of horse. These are also known as homologous structures. Adaptive radiation: 13 notable different species of finches (birds) on the Galapagos Islands . All have different shapes of beaks due to different foods eaten. Diversified due to natural selection (Darwinism). Co-evol: Host/parasite; pollination in plants/insects, birds spiders; predator/prey relationships; mutualism.