the process in which one strain of bacteria is changed by a gene or genes from another strain of the bacteria.
A type of virus that infects bacteria
the nearly perfect fit between A-T and C-G
the partner of Adenine
the partner of Guanine
the process of copying DNA prior to cell division. Occurs during the 'S'phase
An enzyme that joins individual nucleotides to produce a new strand of DNA.
An enzyme that breaks down the hydrogen bonds in DNA. It 'unzips' the DNA.
DNA at the tips of the chromosomes
An enzyme that adds short, repeated DNA sequences to the telomeres. In rapidly dividing cells, such as stem cells, it helps to prevent genes from being damaged or lost during replication.
By observing bacterial transformation, Avery and other scientists discovered that the nucleic acid DNA stores and transmits genetic information from one generation to the next.
Hershey and Chase's experiment with bacteriophages confirmed Avery's results, convincing many scientists that DNA was the genetic material found in genes - not just in viruses and bacteria but in all cells.
The DNA that makes up genes must be capable of storing, copying, and transmitting the genetic information in the cell.
DNA is a nucleic acid made up of nucleotides joined into long strands or chains by covalent bonds
The clues in Franklin's X-ray pattern enabled Watson and Crick to build a model of DNA that explained the specific structure and properties of DNA.
The double helix model explains Chargaff's rule of base pairing and how the two strands of DNA are held together.
DNA polymerase is an enzyme that joins individual nucleotides to produce a new strand of DNA.
Replication in most prokaryotic cells starts from a single point and proceeds in two directions until the entire chromosome is copied.
In eukaryotic cells replication may begin at dozens or even hundreds of places on the DNA's molecule, proceeding in both directions until each chromosome is completely copied.