Tristan da cunha is a remote island in the atlantic ocean. in 1814, 15 people formed a colony there, one of whom carried a rare gene for blindness. the frequency of this gene is now 10 times higher on the island than on the mainland from which the settlers arrived. the mechanism of evolution .

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.

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