<span>Nitrogen fixation is made by numerous prokaryotes, including bacteria, actinobacteria, and certain types of anaerobic bacteria. Organisms that fix nitrogen are called Diazotrophs.</span>
Explanation:
Genetic variation is increased by meiosis
Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occurs during prophase I