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1. Arteries have thick, elastic, muscular walls whereas veins have thin walls with few elastic fibres. Arteries need these properties to give them the strength and elasticity needed to cope with the hi...

Cell division can be divided under three main phases: 

- Interphase: actvie period in life of a cell when metabolic reactions occur, with protein synthesis and DNA replic...

Gene therapy is defined as a set of strategies or procedures that uses Recombinant DNA technology to insert DNA into a patient in order to correct a genetic disease. The result is an altered genotype w...

A mutation is a change in the base sequence of DNA. A mutation can be caused by a mistake during replication of DNA or by mutagenic agents. Mutagenic agents include chemicals that can act as bases or r...

Transcription is the process of making DNA into mRNA. DNA first has to be transcribed into messenger RNA (mRNA), this mRNA can then be translated into a protein (amino acids). DNA Polymerase (an enzyme...