Which of the following will NOT have any saturation neutral points?

An anomalous trichromat is characterized by having three types of photopigments, although one of these pigments is altered in sensitivity. This unique setup allows for saturation neutral points, which are specific wavelengths of light where the anomalous trichromat perceives colors as neutral, or without hue. Therefore, anomalous trichromats experience colors quite similarly to normal trichromats but with some shifts in perception.

In contrast, the other options represent types of dichromacy, specifically tritanopia, deuteranopia, and protanopia. Individuals with these conditions have lost one type of cone photoreceptor and cannot perceive certain wavelengths as distinct hues. As a result, they each have specific points in the color spectrum where they perceive color mixing as neutral, leading to saturation neutral points being present for them.

Thus, anomalous trichromats do not have saturation neutral points like the dichromats do, which makes this option correct.