Comparative Embryology- This is the study of similar structures appearing during the embryonic development of related organisms.
Convergent evolution can lead to quite different organisms evolving similar body structures. This makes it difficult for taxonomists to decide how the organisms should be classified.
Vestigial structures are anatomical structures of organisms in a species which are considered to have lost much or all of their original function through evolution.
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The development of chloroplasts led to the oxygenation of Earth's atmosphere, which allowed the evolution of more complex oxygen-breathing organisms.
Evolutionary trends are either progressive or retrogressive. During progressive evolution new structures are created whereas in retrogressive evolution the existing structures are reduced or eliminated.
The structure that result from convergent evolution indicates that organisms have to be reclassified because when scientists compared nucleic acid from the cells of the animals and they found many diffrences in them.
They don't. Homologous structures provide evidence for evolution not analogous structures.
ecosystems
The stages of development of the embryos of certain organisms are extremely similar, a fact that suggests the organisms had common ancestors.
By comparing body structures of living organisms...By studying fossils...And comparing the early development of different organisms.
Organisms have adapted to the environment through evolution process, over the millions of years. So there structures are closely related to the need of environment.
Vestigial structures are anatomical structures of organisms in a species which are considered to have lost much or all of their original function through evolution.
Convergent evolution can lead to quite different organisms evolving similar body structures. This makes it difficult for taxonomists to decide how the organisms should be classified.
Convergent evolution can lead to quite different organisms evolving similar body structures. This makes it difficult for taxonomists to decide how the organisms should be classified.
I believe you are referring to evolution, which occurs as a result of natural selection causing species to change into new species over time.
Vestigial structures are anatomical structures of organisms in a species which are considered to have lost much or all of their original function through evolution.
Vestigial structures are anatomical structures of organisms in a species which are considered to have lost much or all of their original function through evolution.