O
Ochre Codon:
It is the triplet UAA, one of the three codons that cause the termination of protein synthesis.
Okazaki Fragments:
These are short stretches of 1000-2000 bases produced during discontinous replication; they are later joined into a covalently intact strand.
Oncogenes:
These are the genes whose products have the ability to transform the eukaryotic cells so that they grow in a manner analogous to tumor cells.
Open Reading Frame:
It contains a series of triplets coding for amino acids without any termination codons.
Operon:
It is a unit of bacterial gene expression and regulation, including structural genes and control elements in DNA recognised by regulator gene products.
Origin of Replication:
A site at which DNA replication is initiated. There is only one in bacterial chromosomes, but numerous origins in eukaryotic chromosomal DNA.
Overlapping Clones:
Collection of cloned sequences made by generating randomly overlapping DNA fragments with infrequently cutting restriction enzymes. |