The blue-white screen refers to a procedure of screening that allows for the brisk and convenient determination of recombinant bacteria in vector-based molecular cloning experiments. In the process, the DNA of interest is ligated into a vector. The blue colonies constitute of self-relegated plasmids that are devoid of DNA inserts obstructing the lac Z gene.
The white colonies contain bacteria that conduct plasmids, which possess the inserts of DNA fragments that obstruct the lac Z gene. Therefore, the researcher needs to sequence the plasmids of the white colonies prior to knowing which allele it constitutes.
Answer:
Explanation:
Semiconservative replication is one of the type of replication methods proposed to take place in the cell and has also been confirmed to be the type that actually takes place in the cell. Semiconservative replication involves the production of two copies (of which one is the parental strand which acts as template and the other is the newly synthesized strand) of the original DNA molecule. A leading strand is the newly synthesized strange running in the 5' to 3' direction, the template strand runs from the 3' to 5' direction while the lagging strand is the newly fragmentally synthesized strand oriented in such a way that its production runs in the 5' to 3' direction for each okazaki fragment. Its template strand runs in the 5' to 3' direction.
The cell copes with errors in replication either by performing the 3' to 5' exonuclease proofreading during replication or by utilizing the cell's DNA repair system.
Carbohydrates= Saccharides or simple sugars
Protein= Amino Acid
Answer: cell
Explanation:
Every living organism begins life as a single cell, usually called a zygote.