3. Hershey-Chase (1952) The Definitive Proof Hershey and Chase utilized phages in their research. A bacteriophage is a virus that infects a bacterium, it consists of a protein coat and DNA, it also reproduces quickly and can easily be harvested. Hershey and Chase used radioactive P and S to track the differences in the protein and DNA, since only DNA contains P and only proteins contain S. They infected bacteria with the phage that had the radioactive S, and they infected another group of bacteria with a radioactive P. The results showed that the bacteria contained radioactive P entered the bacterium. Watch this to help you understand: https://www.youtube.com/watch?v=hubXqPrsIR4 EXPERIMENT Radioscthe Kaioactivity Page

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Genetic Recombination

Recombination is crucial to this process because it allows genes to be reassorted into diverse combinations. Genetic recombination is the process of combining genetic components from two different origins into a single unit. In prokaryotes, genetic recombination takes place by the unilateral transfer of deoxyribonucleic acid. It includes transduction, transformation, and conjugation. The genetic exchange occurring between homologous deoxyribonucleic acid sequences (DNA) from two different sources is termed general recombination. For this to happen, an identical sequence of the two recombining molecules is required. The process of genetic exchange which occurs in eukaryotes during sexual reproduction such as meiosis is an example of this type of genetic recombination.

Microbial Genetics

Genes are the functional units of heredity. They transfer characteristic information from parents to the offspring.