Evidence for Karyotype Polymorphism in the Free-Living Flatworm, Macrostomum lignano, a Model Organism for Evolutionary and Developmental Biology
Fig 2
Karyotype variation among Macrostomum species.
(a) the 'normal' chromosome set of Macrostomum lignano, 2n = 8, (b) the 'normal' chromosome set of Macrostomum sp. 8, 2n = 10, and the invariant chromosome sets of (c) M. spirale, 2n = 6, and (d) M. hystrix, 2n = 6. DAPI-staining (inverted image). Scale bar 10 μm.