<span>Science is always changing and never completely proves anything because </span>uncertainty <span>is part of the scientific process
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<span>They are misleading, because dominant alleles do not dominate or prevent recessive alleles from doing a job. Also, one allele can be considered dominant in one regard and recessive in another. It just depends on what you are trying to do with it.</span>
<span>It has the advantage that only when the substrate is presence the genes responsible for its metabolism are turned on.</span>
