Showing posts from February, 2021
Higher organisms are easily studied according to their observable characters. Micro- organisms, especially, bacteria are difficult to separate according to size and shape. The reason being, diverse micro-organisms share common morphology. Likewis…
Lysogeny or lysogenic cycle is one of type of viral reproduction or life cycle. Lysogenic cycle is characterized by (1) integration of the bacteriophage nucleic acid into host bacterial genome by site specific recommendation and replication with b…
It is a normal tendency of bacterial culture to grow in a heterogeneous manner. Usually the cells In a population occur in different state of physiology as well as cell division even though they are inoculated at a time in the medium. Theref…
Diauxic Growth is observed much often that when bacteria are allowed to grow in the medium contalning two different types of carbon/energy sources , they show a characteristic diauxic growth. The diauxic growth is characterized by the occurrence …
The culture in which organisms can grow continuously for indefinite period of time is called continuous culture . Generally in batch culture, the organisms cannot grow for long. This is due to the development of unfavourably conditions In the growt…
Genetic analysis of recombination in bacteria Defination of recombination : Bacterial recombination is characterized by DNA Transfer from one organism called donor to another organism as recipient. Genetic recombination process in Bacteria occurs …
Transduction is a Horizontal gene transfer event in which bacteriophages function as a Vactor/Vehical to transfer DNA from donor bacteria to recipient bacteria. Transfer of bacterial genes by bacteriophagephage (Transduction) was discovered by Zi…
Enzymes and proteins involved in DNA replication A number of enzymes and proteins are associated with the replication fork to help in the initiation and continuation of DNA synthesis, Most prominently, DNA polymerase synthesizes the new strands b…
Conjugation is a process in which the genetic information (DNA) is transferred to, recipient bacteria by direct contact between them through establishment of cytoplasmic bridge. In this process Donor bacteria posses fertility plasmids ( F plasmid …
Central dogma of molecular biology describes the two step process by which information in genes flow into proteins. DNA ➞ RNA ➞ Protein DNA to RNA by Transcription and RNA to Protein by Translation. As the language of nucleotide sequence o…
