09-P057 Calpains expression during Xenopus laevis development

In birds, the mechanism of sex determination is unknown: it is uncertain whether the female-specific W-chromosome encodes an ovary-determining gene analogous to the mammalian testisdetermining gene, or whether testis determination is dependent on a double dose of a Z-chromosome gene(s) that escapes inactivation. In addition, birds do not carry a homologue… CONTINUE READING