‘In a population with variation on both sex chromosomes, one does not know which sex chromosome carries a specific allele in a heterozygote of the heterogametic sex.’
‘In the case of heterozygotes, one allele was randomly selected for each individual.’
‘Homozygotes and heterozygotes at individual sites were distinguished by their chromatographic patterns.’
‘For example, in inbred populations there may be very few heterozygotes but several different homozygotes.’
‘The individual tested was a heterozygote, necessarily possessing a copy of each allele.’
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