Typically, our colour vision is trichromatic, meaning we have three types of cone cells in our eyes, blue, green and red, that respond to short, medium and long wavelengths of light. Each cone ...

Most other mammals are dichromats, meaning they only have two types of cones and are only able to see 10,000 combinations. One evolutionary theory to account for our great colour vision comes down ...

But, in colour blindness, one cone cell type doesn’t function properly. This means that people with colour vision deficiency cannot see the full visible spectrum, and instead see many colours ...

Each cone type contains a pigment sensitive to particular wavelengths of light ... Geckos, on the other hand, have excellent colour vision at night - a useful advantage for a nocturnal hunter. Their ...

Origins of colour vision: An ancient tool for animal communication ... The researchers identified two main types of colour signals in animals: Warning signals: Evolving around 150 million years ...