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Among, say, mammals they are homologous, but the wing of an insect and a bat are analogous.
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How are analogous and homologous structures different?
They are different because homologous structures have the same structure, but serve a different function. Like mammal arms(human, bat and whales). Analogous structues are different structures, but serve the same function. For example, bat wings and butterfly wings.
What are five types of homologies that provide evidence of common ancestry?
limbs wings legs arms and flippers
Compare a bird wing to a butterfly wing What kind of structure does this pair represent?
No they are not. Homologus structures are structures that originated from a common ancestor, they show similarity in anatomy and development even tho they may have different functions. For example the human arm and bird wing are homologus (pentadactyl limb).Bird and insect wings are ANALOGUS, which means they show similar function but show no similar structural relationship.
How does the existence of homologous structures support the theory of evolution?
When comparing earlier and later developments, homologous structures become more refined through time. When comparing common ancestors, we can compare the derivations of a homologous structure between two successors and also between the ancestor and each successor. We thus see several relationships between this and that, from 'right now', 'a little before now' and 'way back then'. For example, we see two species whose legs are very similarly structured, and then we find an ancestor that also possessed such a leg, except it was simpler or shorter or in a different ratio between sections. We can draw conclusions that the later species developed both from this earlier one, and that this earlier one died out, after its successors (which eventually became the newer species) could survive more often because they had better structured legs.
What are vestigial structures?
A structure that has no use in the organism
Two species have homologous structures what do these homologous strcutures show about the evolutionary relationship between the two species?
The presence of homologous structures (for example, the bone structure in chimpanzee arms, human arms, and whale flippers) indicates that the species sharing that homologous structure share a common ancestor.
What structure describes scientists believe human arms and whale flippers were inherited from a common ancestor?
Homologous add Perhaps to a human's foot.
What is the difference between homologous structures and analogous structures?
Homologous = same origin, different function (arms vs. wings) Analogous = same function, different origin (panda thumb)
How are analogous and homologous structures different?
They are different because homologous structures have the same structure, but serve a different function. Like mammal arms(human, bat and whales). Analogous structues are different structures, but serve the same function. For example, bat wings and butterfly wings.
What is homologous structures?
A structure with similar shape but a different use
Structures as different as human arms bat wings and dolphin flippers contain many of the same bones these bones having developed from the same embryonic tissues How do biologists interpret these?
By identifying the bones as being homologous and by proposing that humans, bats, and dolphins share a common ancestor.
Are arms paws and tails homologous structures?
yes
An example of a homologous structure?
Examples of Homologous Structure: Rodent teeth Hooves in species of camels, goats, sheep and cattle Hands and feet in primates Bird feathers Shark morphology
What do arms wings legs and flippers have in common?
they all have good uses for animals and people.
Which type of anatomic structure are birds wings and human arms when compared to each other?
Homologous
What are five types of homologies that provide evidence of common ancestry?
limbs wings legs arms and flippers
How are homologous structures always related?
They are the SAME structure, in different organisms, connected through evolution. A common example are the arms of humans, the wings of a bat, the fins of a whale, are all the same bones but have been adapted for different uses.
