The number of types of cones (responsible for different wavelengths) is __________. The number of types of olfactory receptors is __________.

Name: The number of types of cones (responsible for different wavelengths) is __________. The number of types of olfactory receptors is __________.
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Question

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Humans have three types of cones, each sensitive to different wavelengths of light (red, green, and blue). There are hundreds of types of olfactory receptors, allowing us to detect a wide range of smells.

The Number of Types of Cones (Responsible for Different Wavelengths)