What are the roles of mutation, migration, and selection in bringing about speciation? Drag the terms n the left to the appropriate blanks on the right to complete the sentences. Not all terms will be used. ResetHelp Reproductive isolation reduces genetic differences between populations of a species and can decrease the level of genetic variation in some populations. Mutations that are favorable or detrimental are preserved or removed by natural selection . However, the frequency of the neutral alleles in a population will b

Migration Increase Natural selection mutation genetic drift genetically reproductive isolation interbreed successfully

Explanation: see attachment below

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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