A look at protein synthesis in words and pictures. This website discusses the processes of replication, transcription, and translation. Also covered is Beadle and Tatum research that explains that one gene codes for one polypeptide....

Take this interactive quiz over Mendelian and molecular genetics, then review your score and any missed questions at the end.

A tutorial that explores how the expression of genes is the result of the transcription and translation processes.

Learn about the role of the chemical groups on the ends of the pre-mRNA called the 5' cap and poly-A tail. Also learn about splicing, introns, and exons.

With these series of problems presented here you can study the gene expression in eukaryotes, including topics such as post-transcriptional modifications, mRNA synthesis and RNA-DNA hybridization. The correct answers have a brief...

A learning exercise and comprehensive notes discussing how DNA controls protein synthesis by means of a base code.

Learn how genetic code links groups of nucleotides in an mRNA to amino acids in a protein. Also learn about start codons, stop codons, and reading frame.

Discover the structure and function of DNA and RNA, and understand nucleotides and polynucleotides.