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I believe this sort of structure is called a vestigial structure (a left over remnant). The appendix is another vestigial organ.
A structure in an organism that serves little to no use. Vestigial structures are degenerated and range from slightly harmful to useless to slightly useful. They are remnants of an organism's evolutionary past.
The appendix is the best example of a vestigial organ.
fossils show the bone structure of ancient animals. you can see remarkable similarities between them and animals today. For example, the bone structure of many dinosaurs were very similar to that of birds today. For humans we found a bunch of steps on our evolution that is very good evidence of it.
direct evidence is the observation of evolution as it occurs. We have discovered novel genes conferring an advantage in an environment in which the ancestral population lacked those genes entirely. One example is flavobacterium that evolved nylonase enzymes. Antibiotic resistance is another example.
I believe this sort of structure is called a vestigial structure (a left over remnant). The appendix is another vestigial organ.
Liver
ostrich wings, or the appendix in humans
ostrich wings, or the appendix in humans
A structure in an organism that serves little to no use. Vestigial structures are degenerated and range from slightly harmful to useless to slightly useful. They are remnants of an organism's evolutionary past.
Rudimentary body parts, those that are smaller and simpler in structure than corresponding parts in the ancestral species, are called vestigial organs. They are usually degenerated or underdeveloped. Vestigial organs are the most common evidence.chacha(:
A vestigial structure is one that no longer appears to service a purpose in maintaining homeostasis. An example is the vermiform appendix.
vestigial organ is for example"appendix"in human beings.another example is the"tail bone"in human beings.
A structure within an animal, but is not used and has no purpose, is known as a vestigial structure. For example, in humans, there is a small bone at the very end of the coccyx, which is purposeless. It is known as the "vestigial tail."
vestigial structures
They may have had an important function in the past.
The fact that sheep insulin can be substituted for human insulin is an example of evidence of evolution based on comparative biochemistry. Insulin is a peptide hormone.