Chapter 12, Problem 9P

Interpretation Introduction

(a)

Interpretation:

The number of sequence possibilities for RNA oligomers $15$ nucleotides long is to be calculated.

Concept Introduction:

A nucleotide refers to a basic DNA building block and structural unit. It contains a five-sided sugar, a phosphate group and a nitrogenous base. The nucleotides join together to form a chain of DNA. There are four base types of DNA: adenine (A), cytosine (C), guanine (G) and thymine (T).

Interpretation Introduction

(b)

Interpretation:

The number of amino acid sequence possibilities for pentapeptides is to be calculated.

Concept Introduction:

The organic compounds that contain amine $\left({\text{-NH}}_{\text{2}}\right)$ and carboxyl $\left(\text{-COOH}\right)$ functional groups with a side chain $\left(\text{-R}\right)$ are known as amino acids. Proteins are the biomolecules which are composed of the long chain of amino acid residues.