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Free keywords:
B chromosomes; transposons; evolution; heterochromatin;
repetitive DNA; Muller's ratchet
Grasshopper eyprepocnemis-plorans; new-zealand frog; wasp
nasonia-vitripennis; repetitive dna-sequences; in-situ
hybridization; selfish genetic elements; ribosomal-rna genes;
germ line polysomy; r-locus genes; brachycome-dichromosomatica
Abstract:
B chromosomes are extra chromosomes to the standard complement that occur in many organisms. They can originate in a number of ways including derivation from autosomes and sex chromosomes in intra- and interspecies crosses. Their subsequent molecular ev
