Cephalopod Sex Determination and its Ancient Evolutionary Origin
Gabrielle C. Coffing,
Silas Tittes,
Scott T. Small
et al.
Abstract:Sex chromosomes are critical elements of sexual reproduction in many animal and plant taxa, however they show incredible diversity and rapid turnover even within clades. Here, using a chromosome-level assembly generated with long read sequencing, we report the first evidence for genetic sex determination in cephalopods. We have uncovered a sex chromosome in California two-spot octopus (Octopus bimaculoides) in which males/females show ZZ/ZO karyotypes respectively. We show that the octopus Z chromosome is an e… Show more
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