Homologous refers to the similarity in structure and function of different parts and organs of different animals. For example, a human hand is homologous to a dog paw; a bird's wings are homologous to human arms.
Vestigial refers to parts and organs that, due to historic evolution and development, may no longer be necessary. For example, the tail bone has no purpose or function in modern human structure, and neither do some of the muscles that surround the human ear. Also, whales have unnecessary bones in the back portion of their bodies that appear to have once been used to support legs; this indicates, from an evolutionary perspective, that whales may once have been land animals. Now that they live only in water, those remaining leg bones are vestigial.
They may have had an important function in the past.
difference between one- ones
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a. the presence of homologous structures b. the presence of vestigial organs
Vestigial Organs
vestigial organs
Vestigial Organs
describe a chemical test you would use to show the difference between an isomer and a homologous series
a
Morphological divergence refers to how different species evolve distinct physical characteristics over time. Homologous structures are similar traits found in different species due to a common ancestor. In essence, morphological divergence can lead to differences in body structures, while homologous structures show similarities in body parts across species.
It must be homologous to some feature in an ancestor.
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Vestigial structure