: 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.
For example, a company may choose a 4-4-5 fiscal year that fixes each quarter at 13 weeks, with the fiscal months consisting of four weeks in the first month, four weeks in the second month, and five weeks in the third month. This cycle repeats itself for the remaining three quarters in the year.