1. DNA and RNA are polynucleotides, made up of long chains of nucleotides.2. A nucleotide contains a pentose sugar, a phosphate group and a nitrogen-containing base. In RNA the sugar is ribose, and in DNA it is deoxyribose.3. A DNA molecule consists of two polynucleotide chains, linked by hydrogen bonds between bases.There...

A gene mutation is a change in the sequence of nucleotides that may result in an altered polypeptide.A mutation is a random, unpredictable change in the DNA in a cell. It may be:• a change in the sequence of bases in one part of a DNA molecule• an addition of extra DNA to a chromosome or a loss of ONA from it• a change...

The genetic code specifies the amino acids that are assembled to make polypeptides. The way that DNA codes for polypeptides is central to our understanding of how cells and organisms function.A polypeptide is coded for by a gene and that a gene is a sequence of nucleotides that forms...

DNA molecule consists of nucleotides in which the sugar component is deoxyribose whereas the RNA molecule has nucleotides in which the sugar is a ribose.NucleotidesRoles:are monomers for nucleic acid polymers, such as DNA and RNA. The genetic material (DNA) is a polymer of 4 different nucleotides....