Blending options determine how the values two parents have for each numerical parameter are combined to create a mean for the normal (bell-shaped) distribution from which new plant values are randomly chosen. If the relative weights of each parent are 50% and 50%, the two parents are combined with equal strength. If the relative weights are 80% and 20%, the first parent influences the mean value four times more than does the second parent.

To change blending options,

       Choose Vary Numbers > Custom from the breeder Options menu

       Click the Blending tab.

       If you don't want to differentiate between parameter sections, just click on the Relative weight of first parent slider and drag to the left or right. All parameters will use the new mutation value. 

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       If you want to differentiate between parameter sections, click the Sections button. A list of parameter sections will appear (the same list as in the main window). For each section or sections you want to set the relative weight for, select the sections in the list, then drag the Relative weight of first parent slider to the left or right. 

How this works with the breeder numerical variation predefined settings:

       The blending percent is set to 50% for all numerical variation choices except Custom

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