title: Differential effects of duplication-deficiency gametes from T (3;12) on embryonic development in the German cockroach.
abstract: Differential embryonic development, as seen within egg cases of the German cockroach, serves to distinguish matings of interchange heterozygotes from those of wild type. In T (3;12), one group of fertilized eggs ceases development during stage I of embryonic development; a second group, during stage VII. The frequency of the two groups correlates closely with that of adjacent-1 vs adjacent-2 disjunction. It also does not differ significantly from the expected frequency if zygotes fertilized by one of the two types of adjacent-1 gametes reach a more advanced stage of development than those of the other three types of duplication-deficiency gametes. The absence of a sex difference in the stages of embryonic death indicates that it makes little difference whether aneuploid gametes are of maternal or paternal origin.
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D003058:Cockroaches / Q000196:embryology / Q000235:genetics*; D003433:Crosses, Genetic; D005260:Female; D005804:Genes, Lethal; D005819:Genetic Markers; D008297:Male; D014178:Translocation, Genetic
chemical_list: D005819:Genetic Markers