title: The behavior of the XY pair in mammals.
mesh_terms: D000818:Animals; D005075:Biological Evolution; D002466:Cell Nucleolus; D002869:Chromosome Aberrations; D006224:Cricetinae; D003434:Crossing Over, Genetic; D004247:DNA / Q000032:analysis; D004261:DNA Replication; D005260:Female; D006041:Goats; D006570:Heterochromatin; D006801:Humans; D008297:Male; D008540:Meiosis; D051379:Mice; D011506:Proteins / Q000032:analysis; D012313:RNA / Q000032:analysis; D051381:Rats; D012377:Rodentia; D012728:Sex Chromatin; D012729:Sex Chromosome Aberrations; D012730:Sex Chromosomes / Q000032:analysis / Q000502:physiology; D013094:Spermatozoa / Q000166:cytology
chemical_list: D006570:Heterochromatin; D011506:Proteins; D012313:RNA; D004247:DNA