Differentiation of the Primitive Sex Elements at the Expense of the Y or W, and the Conservation of the Original X or Z
In the previous chapter it was shown that, with the exception of a small number of hermaphroditic species of fishes, the chromosomal sex-determining mechanism does exist in lower vertebrates. However, the X and the Y or the Z and the W of fishes and amphibians are still in an initial stage of differentiation. The two opposing sex determiners are still almost entirely homologous to each other.
Unable to display preview. Download preview PDF.
- Stefani, R.: La digametia femminile in Artemia salina Leach e la costituzione del corredo cromosomico nei biotipi diploide anfigonico e diploide partenogeneico. Caryologia 16, 625–636 (1963).Google Scholar