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In the horizontal direction, the structures are homologous in their morphology, or anatomy, but different in their function due to differences in habitat. In the vertical direction, the structures are analogous in function due to similar lifestyles of organisms but anatomically different since they are part of different groups.
A common example of homologous structures is the forelimbs of vertebrates, where the wings of bats and birds, the arms of primates, the front flippers of whales, and the forelegs of four-legged vertebrates like horses and crocodilians are all derived from the same ancestral tetrapod structure.
The four smallest raccoon subspecies, with a typical weight of 1.8 to 2.7 kg (4.0 to 6.0 lb), live along the southern coast of Florida and on the adjacent islands; an example is the Ten Thousand Islands raccoon (Procyon lotor marinus). [43]
Homologous structures - structures (body parts/anatomy) which are similar in different species because the species have common descent and have evolved, usually divergently, from a shared ancestor. They may or may not perform the same function. An example is the forelimb structure shared by cats and whales.
Image credits: raccoonsfun Technically, raccoons are considered to be pests. They intrude on people’s homes or backyards to find food. They enter homes through chimneys, gaps in roofs, and other ...
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The pattern of limb bones called pentadactyl limb is an example of homologous structures (Fig. 2e). It is found in all classes of tetrapods (i.e. from amphibians to mammals). It can even be traced back to the fins of certain fossil fishes from which the first amphibians evolved such as tiktaalik.
Raccoons are capable of making all sorts of noises. These masked bandits can squeal, churr, bark, and the list goes on! Some of their sounds are tonal, like their famous nightly whistle. While ...
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