AP BIOLOGY

Detailed explanation-1: -Analogous organs are those organs that have some superficial resemblance, perform similar functions and yet, have different evolutionary origins and hence, different anatomical structures.

Detailed explanation-2: -They have a different ancestral origin and hence do not have a shared common ancestor. Examples of analogous organs are wings of birds and butterflies, flippers of Penguins and Dolphins, eyes of the octopus and of mammals, sweet potato and potato.

Detailed explanation-3: -Analogous structures are structures that are similar in unrelated organisms. The structures are similar because they evolved to do the same job, not because they were inherited from a common ancestor. For example, the wings of bats and birds, shown in Figure below, look similar on the outside.

Detailed explanation-4: -Homologous structures share a similar embryonic origin; analogous organs have a similar function. For example, the bones in the front flipper of a whale are homologous to the bones in the human arm. These structures are not analogous. The wings of a butterfly and the wings of a bird are analogous but not homologous.