Compound X-chromosomes from X-rayed mature sperm of Drosophila melanogaster.
D000818:Animals; D002869:Chromosome Aberrations; D004331:Drosophila melanogaster; D008297:Male; D012730:Sex Chromosomes; D013094:Spermatozoa / Q000528:radiation effects* / Q000648:ultrastructure; D014965:X-Rays