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Fig. 3 | BMC Genetics

Fig. 3

From: Genetic stability, genetic variation, and fitness performance of the genetic sexing Salaya1 strain for Bactrocera dorsalis, under long-term mass rearing conditions

Fig. 3

Schematic representation of a basic Y-autosome translocation and putative consequence in the Salaya1 strain. a A combination of Y-autosome translocation and a selectable marker of pupal color; wp + and wp represent the wild-type allele (brown pupal color) and the mutant allele (white pupal color), respectively. The two reciprocal components of the Y-autosome translocation are Y-Awp+ and A-Y. b The two types of segregation of Y-autosome translocation during male meiosis: alternate and adjacent-1 (modified from [2]). c The mating schemes with no and one crossing over. No crossing over produces 50% of genetically normal progenies (e.g., brown-pupae males (brown border) and white-pupae females (gray border) whereas the rest of the progenies are autosomal deletion or triplication types (dash border). On the other hand, one crossing over presents 50% of sex-reversal progenies (e.g., brown-pupae females (wp+) and white-pupae males (wp)) whereas the rest are aneuploidy. Y-Awp+: translocation fragment carrying a Y chromosomal centromere; A-Y: reciprocal translocation fragment carrying an autosomal centromere; X: X chromosome; and Awp: autosome

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