By: Janet Grischy
Polymerase chain reaction, PCR, is a technique used to quickly increase the size of a DNA sample. It is used in medicine to help diagnose infections and hereditary diseases. In genetic research, it amplifies the part of the genome under investigation. In forensics it can...
What is polymerase chain reaction
By: Debbie Luyo
Polymerase Chain Reaction (PCR ) is a technique that utilizes the enzyme DNA polymerase for making copies of a gene, gene fragment, or specific DNA or RNA sequence. DNA polymerase is the enzyme that catalyzes replication and repair of DNA. PCR is a requisite tool...
PAGE and Western Blots
By: Danielle Corbett
Page (Polyacrylamide Gel Electrophoresis) and Western BlotsGel Electrophoresis is a separation science commonly used in many laboratories when searching for protein or DNA of interest. It is similar to using strainers in your kitchen to separate large pieces of food from the smaller pieces. Gel...
DNA points the way in biological identifications
By: Keith Hamburger
Using DNA to identify unique and related species is a powerful tool that has only recently become available to biologists. Just like DNA identification is being used to identify individuals involved in criminal activity by forensic scientists, biologists can use DNA to differentiate between different...
The diverse functions of RNA
By: Megan Worley
RNA has a wide variety of functions within each and every cell. Known fully as Ribonucleic acid, RNA functions differently than DNA. While DNA is primarily the storage material for genetic information, RNA is a carrier of genetic information, a catalyst for biochemical reactions, an...
Molecular biology techniques: RNA interference
By: Danielle Dusold
RNA interference, or RNAi, is an RNA-dependent mechanism that silences genes. RNAi is important in the gene silencing of developmental genes and show great potential for numerous fields of research. RNAi is commonly used to understand the function of genes in development, disease progression, reproduction...
By: Megan Worley
Serial analysis of gene expression (SAGE) is a technique that is used by microbiologists to obtain the expression data for many genes as well as identifying the genes that are expressed. Gene expression is particularly important because it determines the characteristics of individual organisms.The...
By: Janet Grischy
When RNA was first discovered, it was thought to be purely a messenger for DNA, a molecule that carried the DNA's commands. However, mRNA, messenger RNA, is only one of many types of the RiboNucleic Acid that performs a multitude of tasks in the cell...
By: Keith Hamburger
Gene duplication is an event where a complete copy of one or more pieces of DNA, containing a complete gene, multiple genes or even an entire chromosome, is duplicated. As an evolutionary event, gene duplication occurs due to an error during meiosis, the step in...
The diverse functions of RNA
By: Divya Mohan
RNA is the little known cousin of DNA. Standing for Ribonucleic Acid, RNA is mainly different from DNA in the sugar (ribose) that makes up its backbone. DNA is famous for being the code for life, but in fact it is a code for making...

 

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