Fig. 5: Evolutionary dynamics of the sex-determining mechanism in Bb. | Nature Communications

Fig. 5: Evolutionary dynamics of the sex-determining mechanism in Bb.

From: Evolutionary dynamics of sex determination in Branchiostoma belcheri driven by repeated transposition of a single novel gene

Fig. 5: Evolutionary dynamics of the sex-determining mechanism in Bb.

TesDwa originated as a duplicate of an ancient autosomal tesD copy, evolving independently after its translocation to the twai locus. TesDwb emerged more recently as a duplicate of an autosomal tesD copy closely resembling the extant tesD (Fig. S10) following a second transposition event. The Bb-b-SDR, containing tesDwb, was subsequently transposed to other autosomal loci, which are no longer transcribed.

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