Origin of replication is the site where replication initiates, whereas promoter is the site where RNA polymerase binds and transcription starts.... View Article
Meselson and Stahl demonstrated that DNA replication is semiconservative by their experiment on E.coli, growing them in the NH4Cl medium having... View Article
A replication fork is a small stretch of DNA, which is separated by helicases and where replication occurs. Further reading: DNA Polymerase... View Article
The number of chromosomes remains the same after replication but each chromosome now contains two chromatids. Amount of DNA doubles per cell.... View Article
pBR322 is a plasmid. p stands for plasmid and BR stands for Bolivar and Rodriguez, names of the two scientists. Further reading: Plasmid... View Article
Replication is called semiconservative because at the time of replication, in each of the two copies of the DNA, one of the strands of DNA is old... View Article
The repressor inhibits the expression of a gene by binding to the operator on the DNA, whereas the corepressor does not bind to DNA directly,... View Article
Origin of replication is the site where replication begins. DNA polymerase catalyses the replication. Further reading: DNA Polymerase RNA... View Article
Lac operon is an inducible operon. Inducible operons are normally switched off and become operational only in the presence of an inducer.... View Article
A repressible operon is generally on or functional and can be repressed by a repressor molecule, e.g. trp operon. Further reading: MCQs On... View Article
Operon is a genetically regulated system of polycistronic structural genes, which is regulated by a common promoter and operator, e.g. lac... View Article
Operon is a transcriptionally regulated system consisting of genes coding for functionally related proteins and are regulated by a common... View Article
Complete linkage occurs when two genes are so closely linked that they do not separate at the time of crossing over. Also Check: How Does... View Article
All the genes present on one chromosome comprise a linkage group. Human females have 23 linkage groups (22 pairs of autosomes and a pair of X... View Article
