: 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.
âº Many firms define their fiscal year as a 52/53 week period rather than a 12-month period. âº These firms normally have 13-week quarters except for one 14-week quarter every five or six years. âº Compared to 13-week quarters, revenues and earnings are predictably higher in 14-week quarters.