James Watson and Francis _______________ discovered the existence of DNA in 1953.
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Q111: Heterozygotes for sickle-cell anemia protect against _.
Q112: A sequence of chemical bases on a
Q113: Darwin's theory is properly known as the
Q114: When an existing population splits up into
Q115: The process of conversion of instructions from
Q117: Adaptation is the outcome of _.
Q118: The Mendelian principle that variants of a
Q119: The major organizing principle of biological science
Q120: The ultimate source of evolutionary change and
Q121: The four evolutionary forces are natural selection,
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