They mean the same exact thing. Now, as we'll see in just a moment, to actually calculate the Map units the distance between our two genes and Map units we have to calculate the percent recombination between those two genes. So to see exactly what we mean by that, let's take a look at the following example. In this example, we're going to discuss how to calculate the percent recombination between two genes and how to use the percent recombination to find what the Map units are, what the distance is in Map units between those two genes. So let's begin by taking a look at the following diagram. So in this diagram, what we're basically doing is we're taking two types of fruits lies.