Given below are two statements. One is labelled Assertion (A) and the other is labelled Reason (R).

Assertion (A) : Fore limbs of mammals have similar anatomical structure.

Reason    (R)  : Homology indicates common ancestry.

In light of the above statements, choose the correct answer from the options given below.

Both (A) and (R) are true and (R) is the correct explanation of (A).  

Assertion (A) states that forelimbs of mammals have similar anatomical structures. This is true. Mammals, despite differences in species and function, generally exhibit a common structural pattern in their forelimbs, which includes a similar arrangement of bones (humerus, radius, ulna, carpals, metacarpals, and phalanges).

Reason (R) states that homology indicates common ancestry. This is also true. Homology refers to the similarity in structure between different organisms, suggesting that they share a common evolutionary ancestor. The similarity in the anatomical structure of mammalian forelimbs is an example of homology, indicating that mammals share a common ancestor.