The sex ratio of Dinophilus gyrociliatus is affected by genetic, environmental and maternal factors,but it was suggested that sex was determined by male heterogamety. In female embrios, a diploid number of 24 chromosomes was determined. Preliminary results on male embryos karyotype evidenced 2n=23 chromosomes, confirming the occurrence of a XX-X0 sex chromosome system.
I cromosomi di Dinophilus gyrociliatus (Polychaeta; Dinophilidae): il cariotipo femminile / Simonini, Roberto; Molinari, Federica; Prevedelli, Daniela. - In: BIOLOGIA MARINA MEDITERRANEA. - ISSN 1123-4245. - STAMPA. - 9 (1):(2002), pp. 642-644.
I cromosomi di Dinophilus gyrociliatus (Polychaeta; Dinophilidae): il cariotipo femminile.
SIMONINI, Roberto;MOLINARI, Federica;PREVEDELLI, Daniela
2002
Abstract
The sex ratio of Dinophilus gyrociliatus is affected by genetic, environmental and maternal factors,but it was suggested that sex was determined by male heterogamety. In female embrios, a diploid number of 24 chromosomes was determined. Preliminary results on male embryos karyotype evidenced 2n=23 chromosomes, confirming the occurrence of a XX-X0 sex chromosome system.
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