<span>Luca Cavalli-Sforza is a geneticist who hypothesized that the skin-color change came late because previous people had complete vitamin D access to the foods that they are eating. But the moment they started farming, the main vitamin sources are reduced, making a larger gain of having light skin.</span>
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A monohybrid cross is a cross between two organisms with different variations at one genetic chromosome of interest.[1][2] The character(s) being studied in a monohybrid cross are governed by two or multiple variations for a single locus. To carry out such a cross, each parent is chosen to be ratio.
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Tissues exist within organs, which exist within organ systems. Communities exist within populations, which exist within ecosystems. Organelles exist within cells, which exist within tissues. Communities exist within ecosystems, which exist in the biosphere.
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C - Rosalind Franklin is the correct answer
