The techniques used to study molecular evolution are based on the comparison of nucleotide and amino acid sequences among species.

a) true

b) false

True

Explanation:

In molecular evolution, the similarity in genome of two or more different organisms is studied. These changes are observed at DNA and protein level to study the variations/evolutionary changes brought in by the long term mutation. Nucleotide sequences of the DNA are assessed to determine the changes, its effect, cause and rate of occurrence. All the structural configurations of protein ranging from primary sequence to three dimensional structures are studied

Hence, the given statement is true