increased break-induced loss of heterozygosity increased break-induced loss of heterozygosity via chromosomal truncation FYPO:0005944 2017-03-09T15:04:12Z midori This phenotype may be observed in diploid cells, or in cells that have two copies of one or more reporter loci but are otherwise haploid. Loss of heterozygosity associated with chromosomal translocation may result from allelic crossover or break-induced replication. In cells with this phenotype, loss of heterozygosity may or may not occur via a different mechanism, such as chromosomal truncation. A cell phenotype observed in the vegetative growth phase of the life cycle in which chromosomal truncation that would result in the loss of one of two different alleles of a gene occurs to a greater extent than normal. increased break-induced loss of heterozygosity via chromosomal truncation during vegetative growth increased break-induced loss of heterozygosity via chromosomal truncation during mitotic cell cycle increased chromosomal truncation