The mode of inheritance of two LAP allozyme loci in Pinus sylvestris is reported. For each locus the bands are clearly separated into two regions in the gels after straining for LAP. The allozymes appear like monomeric products, i.e. two bands in a heterozygote. The analyses indicate four alleles for both loci, LAP-A and LAP-B. Among a total of 140 trees 18 were considered to be heterozygous for locus LAP-A and 23 heterozygous for locus LAP-B on the basis of endosperm or/and needle analyses. Of these, six from the former and eleven from the latter group were chosen for closer studies. In order to study the postulated alleles, suggested on the basis of the banding pattern, 12 crosses were analysed. The total results indicate that in most cases the gametic segregations of the two loci LAP-A and LAP-B are very close to 1:1 in female as well as male gametes. For both loci, however, there are exceptions. The genetical mechanisms causing these exceptions are discussed.
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Dag Rudin (2009) studied this question.