What is/are the difference(s) between homologous structures and analogous structures?

Answer 1

Homologous structures have the same basic plan but are adapted for different function.
For example, the pentadactyl limb of vertebrates has the same arrangement of bones in a bat's wing, a human arm, a dolphins flipper and a mole's claw. Although the basic plan is the same (single bone, two parallel bones, a block of bones and five digits) the plan has been adapted for a range of purposes.

Analogous structures do the same job but have different origins, for example a moth's wing and an eagle's wing, or an ant's leg and a dog's leg.

John H

Answer 2

Homologous And Analogous Structures

Answer 3

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RE:
What is/are the difference(s) between homologous structures and analogous structures?

Answer 4

Homologous Structures have similar morphology, embryology and anatomy etc. but are dissimilar in their functions. They are inherited from a common ancestor.
Analogous structures are those structures in different species which perform the same function, have similar appearance and structure but are not evolved together; therefore do not share a common ancestor.

Answer 5

When structures are analogous, they have similar function but have a different evolutionary origin, such as the wings of birds and insects.

However, when structures are homologous, they are similar in structure and function AND have a common ancestry in evolution such as the forelimbs of humans and whales as both have carpals, metacarpals, a radius, an ulna and a humerus.

Answer 6

Homologous means shared ancestry due to similarities or the part of organism similar in structure but different in function e.g the forelimb of cow adapted for walking , the forelimb of dolphin adapted for swimming the forelimb of bat adapted for flight etc....
Analogous means the part of organism adapted with the same function but belongs with different origin or ancestor e.g the wing of bat and bird adapted for fly.

Answer 7

Homologous structures are identical exactly same structures
EX: homologous chromosomes

Analagous meaning similar or comaparable but not quite the same.
EX: analagous genome of humans and chimps