3 Humans also have an MC1R gene, and scientists have discovered that it's one of the genes that determines the type and amount of melanin in a person's skin. If you wanted to study whether skin color, like mouse fur
color, has evolved by natural selection, what additional challenges do you imagine in collecting data or
designing experiments to explore skin color evolution in humans? Make a list of at least three additional
challenges.

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in which structure in the nucleus are ribosomes made?

b) nucleolus!

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hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

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within 30 of the equator hope this