ANATOMY

Detailed explanation-1: -Analogous structures are similar structures in unrelated organisms. These structures are similar because they do the same job, not because they share common ancestry. For example, dolphins and sharks both have fins, even though they aren’t related.

Detailed explanation-2: -Homologous Structures. The structures derived from a common ancestor or from the same evolutionary or developmental origin are referred to as homologous structures. Homologous structures may not necessarily perform the same function. An example of homologous structures is the forelimbs of humans and bats.

Detailed explanation-3: -Analogous structures While similar structure can indicate relatedness, not all structures that look alike are due to common ancestry. Analogous structures evolved independently in different organisms because the organisms lived in similar environments or experienced similar selective pressure.

Detailed explanation-4: -Analogous structures are physically (but not genetically) similar structures that were not present the last common ancestor. Homology can also be partial; new structures can evolve through the combination or parts of developmental pathways.

Detailed explanation-5: -Analogous structures are structures which perform the same function, but have different ancestry. 3. We know that organisms must have evolved structures independently if they do not have a common ancestor.