W chromosome sequences of two bombycid moths provide an insight into the origin of Fem
Jung Lee,
Toshiaki Fujimoto,
Katsushi Yamaguchi
et al.
Abstract:Fem is a W‐linked gene that encodes a piRNA precursor, and its product, Fem piRNA, is a master factor of female determination in Bombyx mori. Fem has low similarity to any known sequences, and the origin of Fem remains unclear. So far, two hypotheses have been proposed for the origin of Fem: The first hypothesis is that Fem is an allele of Masc, which assumes that the W chromosome was originally a homologous chromosome of the Z chromosome. The second hypothesis is that Fem arose by the transposition of Masc to… Show more
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