Did genomic imprinting and X chromosome inactivation arise from stochastic expression?

Both X chromosome inactivation and autosomal genomic imprinting generate a functional hemizygosity. Here we consider models that explain the evolution of genomic imprinting and X chromosome inactivation from novel perspectives. Specifically, we suggest th
Addresses: Ohlsson R, Uppsala Univ, Evolut Biol Ctr, Dept Genet & Dev, Norbyvagen 18A, S-75236 Uppsala, Sweden. Uppsala Univ, Evolut Biol Ctr, Dept Genet & Dev, S-75236 Uppsala, Sweden. EPHE, Inst Jacques Monod, F-75005 Paris, France. La Trobe Univ, Dept