Given below are two statements.

Statement I: Comparative anatomy and morphology shows similarities and differences among organisms of today and those that existed years ago.

Statement II: Similarities in proteins and genes performing a given function among diverse organisms give clues to common ancestry.

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

Organisms that are related through common ancestry often share similar structures which can be observed through comparative anatomy. For example, the bones of the forelimbs of mammals have similar structures, despite differences in size and function. By studying these similarities and differences, scientists can infer the evolutionary relationships between different groups of organisms.
All living organisms use the same genetic code and share many of the same genes and proteins. For example, the DNA sequences that code for the protein haemoglobin are similar across many different species. This suggests that these organisms share a common ancestor.