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<span>The right option is <span>B) Combination of all the wavelengths of visible light
</span><span>White light is formed when there is mixture of all the colors of the visible light spectrum (ROYGBIV). White light is perceived when all the wavelengths of the visible light spectrum strike the eye at the same time. The sensation of white is not the result of a single color of light.
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Sound waves enter the outer ear and pass into the ear canal where the waves cause the eardrum to vibrate.
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Correct answer: D
A pollen is where male gametes are produced and so the number of chromosomes, as we are talking about gametes, is n. This means that the grain of pollen will only have a copy of each gene, and therefore only one allele for each gene - one S, and one T or t. So, the possible combinations are ST and St.