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Southern blot is a method used for detection and quantification of a specific DNA sequence in DNA samples. This method is used in molecular biology. Briefly, purified DNA from a biological sample (such as blood or tissue) is digested with restriction enzymes, and the resulting DNA fragments are separated by using an electric current to move ...
This process of the second bacterial cell taking up new genetic material is called transformation. In molecular biology and genetics, transformation is the genetic alteration of a cell resulting from the direct uptake and incorporation of exogenous genetic material from its surroundings through the cell membrane (s).
An origin of transfer ( oriT) is a short sequence ranging from 40-500 base pairs in length [1] [2] that is necessary for the transfer of DNA from a gram-negative bacterial donor to recipient during bacterial conjugation. [3] [4] [5] The transfer of DNA is a critical component for antimicrobial resistance within bacterial cells [6] and the oriT ...
An ancient buglike sea creature with a fan-shaped tail and a carapace that wrapped around its body swam upside down and looked like a taco — but this taco could bite back. Newfound fossils of ...
Vector (molecular biology) In molecular cloning, a vector is any particle (e.g., plasmids, cosmids, Lambda phages) used as a vehicle to artificially carry a foreign nucleic sequence – usually DNA – into another cell, where it can be replicated and/or expressed. [ 1] A vector containing foreign DNA is termed recombinant DNA.
Benton said the man continued to follow them even when her family got on the plane during early boarding and sat down in their row. At that point, she knew she needed to say something as her kids ...
Horizontal gene transfer ( HGT) refers to the transfer of genes between distant branches on the tree of life. In evolution, it can scramble the information needed to reconstruct the phylogeny of organisms, how they are related to one another. HGT can also help scientists to reconstruct and date the tree of life, as a gene transfer can be used ...
During meiosis, homologous recombination can produce new combinations of genes as shown here between similar but not identical copies of human chromosome 1. Homologous recombination is a type of genetic recombination in which genetic information is exchanged between two similar or identical molecules of double-stranded or single-stranded ...