Vegetative reproduction - a reproductive process that is asexual and so does not involve a recombination of genetic material.
The difficulty is in accounting for the continuance in extensive fine weather districts of large positive charges in the atmosphere in face of the processes of recombination always in progress.
At barometric pressures such as exist between 18 and 36 kilometres above the ground the mobility of the ions varies inversely as the pressure, whilst the coefficient of recombination a varies approximately as the pressure.
Low levels of nucleotide polymorphism within species coincided with low rates of recombination.
I am currently working on a project to detect sporadic recombination in multiple DNA sequence alignments.