B CHROMOSOME IN THE BEETLE COPROPHANAEUS CYANESCENS (SCARABAEIDAE): EMPHASIS IN THE ORGANIZATION OF REPETITIVE DNA SEQUENCES

B chromosome in the beetle Coprophanaeus cyanescens (Scarabaeidae): emphasis in the organization of repetitive DNA sequences

Abstract Background To contribute to the knowledge of coleopteran Stress Relief cytogenetics, especially with respect to the genomic content of B chromosomes, we analyzed the composition and organization of repetitive DNA sequences in the Coprophanaeus cyanescens karyotype.We used conventional staining and the application of fluorescence in situ hy

read more




Chromoanagenesis from radiation-induced genome damage in Populus.

Chromoanagenesis is a genomic catastrophe that results in chromosomal shattering and reassembly.These extreme single chromosome events were first identified in cancer, and have since been observed in other systems, but have so far only been formally documented in plants in the context of haploid induction crosses.The frequency, origins, consequence

read more