Transcription : It is DNA directed synthesis of RNA in which the RNA is transcribed on $3^{\prime} \rightarrow 5^{\prime}$ template strand of DNA in $5^{\prime} \rightarrow 3^{\prime}$ direction.
Polymorphism : Variation at genetic level arisen due to mutation, is called polymorphism. Such variations are unique at particular site of DNA, forming satellite DNA. The polymorphism in DNA sequences is the basis of genetic mapping and DNA finger printing.
Translation : Protein synthesis from mRNA, tRNA, rRNA. Bioinformatics : Computational method of handling and analyzing biological databases.