"The centimorgan is equal to a 1% chance..." I think this is a oversimplification. There are map functions that convert recombination frequency to centimorgan, based on certain assumptions, for example the Haldane or Kosambi map functions.
I also don't understand the following sentance: "A 50 cM distance means that the genes will reassort when an odd number of crossings happen, which happens 31.8% of the time." A 50 % recombination frequency means that the markers are not linked, that they are either very far apart on the same chromosome, or on different chromosomes, and therefor are inherited at random. 188.8.131.52 09:27, 25 April 2007 (UTC)