General formula for calculating length of DNA

Suppose 25,000 μm is 1 inch. Enumerate a formula to find the length of a DNA molecule in inches a) if the length is known in μm and b) only the number of nucleotide pairs is given.

Amino acid number prediction following mRNA sequence

How many different mRNAs would specify the following amino acid sequences - a) met - phe - ser - pro b) ile - arg - phe - leu - ala [use the triplet codon chart to find the number of codons representing the amino acids]

Amino acids and codons

A certain gene consists of 450 nucleotide pairs. The protein product of the gene consists of 150 amino acid residues. How many codons make the 150 residues?

Polypeptide equivalents and their functionality

Convert the following mRNA segments into their polypeptide equivalents; a) 5′ GAAAUGGCAGUUUAC 3′ b) 3′ UUUUCGAGAUGUCAA 5′ c) 5′ AAAACCUAGAACCCA 3′ d) 3′ UGACCAGAUCUACCGAAA 5′

Identifying amino acids produced using fixed proportions of nucleotide residues

A solution containing 80% cytosine and 20% uracil was used to make synthetic RNAs. A bacterial cell free system produced proteins using these mRNAs in the following proportions: a) 4 times as many serine as leucine residues. b) 16 times as many serine residues as phenylalanine residues. c) 16 times as many proline residues to leucine residues. Identify the amino acids formed.