Assertion : Comparative biochemistry provides a strong evidence in favour of common ancestry of living beings. Reason : Genetic code is universal.

Step-by-step solution

Convincing evidence of common ancestry comes from the similarities in the biochemical composition, reactions and physiological activities of living beings, like metabolic process, enzymes, cytochrome C , insulin, haemoglobin, blood and lymph etc. Genetic code is the sequence of DNA nucleotides that determines the amino acid sequence of the translated protein. The genetic code is read in triplets of bases called codons. Genetic code is applicable universally i.e. a codon specifies the same amino acid from a virus to