A comparison of the chromosome complement of inner cell mass and trophoblast cells in Day-10 pig embryos

Abstract

Summary. Cytogenetic examination was made of 31 entire, Day-10 pig embryos, 39 separated inner cell masses and 38 of the related trophoblast samples. The incidence of mixoploidy was 64·5, 5·1 and 47·4% respectively. The incidence of triploidy was 2·9%. It was concluded that polyploid cells in entire Day-10 pig embryos were primarily located in the trophoblast and that the incidence of true mixoploidy in porcine embryos is very low.