: 11 The later definition by Cavalli-Sforza & Bodmer (1971) is currently used: Genetic polymorphism is the occurrence in the same population of two or more alleles at one locus, each with appreciable frequency, where the minimum frequency is typically taken as 1%.
The financial world splits up its calendar into four quarters, each three months long. If January to March is the first quarter, April to June is the second quarter, and so on, though a company's first quarter does not have to begin in January.
1 Quarterly â the 25th of the month following the end of the quarter if combined taxes for the quarter are less than $600 or an average of less than $200 per month in the quarter. 2  Quarters are January-March; April-June; July-September; OctoberâDecember;