actcr and those lr~clcingit gro~vs progressively greater with each factor addecl.The practical value of the principle nlny prove to be considcrable xs it serves to explain cases i n which a character (lomillant in I", almost cornl~letely iliinppears i n F,, :mci i n which a n apparently non-mcndelian result is obtained involving a reversal of doniinmice.
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B. S. Levine (1914) studied this question.