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.
Draw the structure of the double Holliday junction
that would result from strand invasion by both ends of the
broken duplex into the intact homologous duplex shown
in Figure Q5–3. Label the left end of each strand in the Hol-
liday junction 5ʹ or 3ʹ so that the relationship to the paren-
tal and recombinant duplexes is clear. Indicate how DNA
synthesis would be used to fill in any single-strand gaps in
your double Holliday junction.
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