Yamamoto K, Hamaji T, Kawai-Toyooka H, Matsuzaki R, Takahashi F, Nishimura Y, Kawachi M, Noguchi H, Minakuchi Y, Umen JG, Toyoda A, Nozaki H.

Proc Natl Acad Sci U S A. 2021 May 25;118(21):e2100712118. doi:10.1073/pnas.2100712118

Three genomes in the algal genus Volvox reveal the fate of a haploid sex-determining region after a transition to homothallism

Volvox has a sex-determining region (SDR) of ~1 Mb. The homothallic species Volvox africanus has a SDR-like region ressembling the female one, and a multicopy array of the male-determining gene (MID) at a different location.