Data from: A reciprocal translocation radically reshapes sex-linked inheritance in the common frog

X and Y chromosomes can diverge when rearrangements block recombination
between them. Here we present the first genomic view of a reciprocal
translocation that causes two physically unconnected pairs of chromosomes
to be coinherited as sex chromosomes. In a population of the common frog
(Rana temporaria), both pairs of X and Y chromosomes show extensive
sequence differentiation, but not degeneration of the Ys. A new method
based on gene trees shows both chromosomes are sex-linked. Further, the
gene trees from the two Y chromosomes have identical topologies, showing
they have been coinherited since the reciprocal translocation occurred.
Reciprocal translocations can thus reshape sex linkage on a much grander
scale than do inversions, the type of rearrangement that is much better
known in sex chromosome evolution, and they can greatly amplify the power
of sexually antagonistic selection to drive genomic rearrangement. Two
other populations show evidence of yet other rearrangements, suggesting
that this species has unprecedented structural polymorphism in its sex
chromosomes.