NEET BIOLOGY

GENETICS AND EVOLUTION

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Analogous structures share ____
A
Similar function but different structure
B
Similar function and structure
C
Similar structure but different function
D
None of the above
Explanation: 

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. Homologous organs are organs which have similar functions but different origins.

Detailed explanation-2: -Analogous structures are features of different species that are similar in function but not necessarily in structure and which do not derive from a common ancestral feature (compare to homologous structures) and which evolved in response to a similar environmental challenge.

Detailed explanation-3: -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-4: -In evolutionary biology, analogous structures are defined as biological structures having similar or corresponding functions but not from the same evolutionary origin. In other words, species use these biological structures for the same purpose and yet these species are from unrelated evolutionary lines.

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