… share homology with both the mammal XY … sex chromosomes of platypus share no homology
with the ancestral therian X chromosome, which is homologous to platypus chromosome 6. …

… have extensive self-association resembles recent observations in chicken [12, 37]. Secondly,
the presence of unpaired DNA would trigger MSCI and we would detect DDR component …

… The numbers of the platypus gene contigs as present in current Ensembl database are
indicated. “Ultra” in the designation of some contigs is shortened to “U”. The mutual orientation of …

… recent completion of the platypus genome sequence has completely changed our understanding
of when the therian mammal X and Y chromosomes … have had a bird-like ZW system (…

… of the unusually complex bird-like sex-chromosome system of … most other mammals have
one pair of sex chromosomes (XX … This means that one homologue of chromosome X 3 is more …

… The recent sequencing of the entire platypus genome … sex chromosomes in chicken and
platypus sperm and to compare our results with existing data in sperm of eutherian mammals. In …

… platypus X1, more recent! studies showed that some [9] and later all [6, 11], mammalian Xq
genes map to platypus … monotreme sex chromosomes, it is by no means clear that this implies …

… Homologies shared by the mammal X and Y imply a similar … mammals; hence, studying
the platypus sex chromosome … Do reptiles have an incomplete bird-like compensation system…

… Bird-like sex chromosomes of platypus imply recent origin of mammal sex chromosomes.
Genome Res 18, 965–973. Wakefield, MJ, Keohane, AM, Turner, BM, and Graves, JA (1997). …

… in ZZ males, and on all five Xs in female platypus. Our results … an ancient bird-like Z in a
common reptile-mammal ancestor. … -allele active in platypus, and implies that inactivation of PAR …