Words similar to nondisjunction

Example sentences for: nondisjunction

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The rec12-D15 (null) mutants are achiasmatic (Table 1) and, as anticipated, exhibit a high frequency of MI nondisjunction (Figures 3, 5, Table 2).
However, among rec12 mutant asci with four spores and an aberrant DNA distribution (Figure 3C, classes b, c, d, e), only 26% or less exhibited a pattern characteristic of simple MI nondisjunction (Figure 3C, classes c, e).
However, only about 50% of diploid meiotic products from rec12-D15 (null) mutant meioses were heterozygous for centromere linked markers (Figure 5E), indicating that some fraction of the products were derived from precocious separation of sister chromatids (PSS) and/or MII nondisjunction (Figure 5C, 5D).
However, the frequency of MI nondisjunction observed is only half of that expected, suggesting the presence of a distributive (achiasmatic) system of chromosome segregation.
In the absence of Rec12 protein and crossovers, a backup distributive (achiasmatic) segregation system operates successfully on up to half of the chromosomes that would otherwise undergo MI nondisjunction.