Download analogous structures10/28/2023 ![]() ![]() This is because they show the changes from evolution. ![]() This causes groups of living things to change because the parents pass on what helped them live to their children.įossils give strong signs that livings things from the past are not the same as those found today. Evolution is when living things change over time to help them live long enough to reproduce. Since the time of Darwin, what we know about this subject has become clearer and broader. ![]() A large part of Darwin's book, On the Origin of Species, found patterns in the world around us that make sense with evolution. Predator-prey "arms race"Predators evolve better ways to catch prey.We are able to prove evolution in many ways. When they look at every level of living systems, biologists see the mark of past and present changes. Evolutionary branching trees can show how adaptation leads to new species over time.Like a family tree, it shows how organisms evolved from common ancestors that may no longer be alive on earth today.Analyzing the embryos of animals shows that the more closely related the animals are, the more alike their embryos are during development.The birds’ beaks are shaped differently so they can occupy different niches in the ecosystem. In order to adapt to various environmental conditions, the two groups develop into distinct species due to differences in the demands driven by the environmental circumstances.ĭarwin’s finches show a path towards divergent evolution. a group from a specific population develops into a new species.In different parts of the world, ant eating animals developed long snouts and powerful digging paws. Organisms that are NOT related evolve similar traits as a result of evolving to fit into similar environments or ecological niches.They have the same function and shape, but are made differently.Īnalagous structures help to show Convergent Evolution The wings of the bat, butterfly, and bird are made of different coverings, and insects do not have internal bones. The bones of the bat, mouse, and human are homologous. Homologous Structures (flowers)Broccoli and Cauliflower evolved from Mustard ![]()
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