Fig. 6: Immunofluorescence images showing the distribution of H4K20me3, H4K16ac, and HP1 during male meiosis when the B chromosome is paternally or maternally inherited. | Heredity

Fig. 6: Immunofluorescence images showing the distribution of H4K20me3, H4K16ac, and HP1 during male meiosis when the B chromosome is paternally or maternally inherited.

From: Chromatin state dynamics of autosomes and the B chromosome during spermatogenesis in Pseudococcus viburni

Fig. 6

A, B H4K20me3, (C, D) H4K16ac in green; HP1 in red; DNA (Hoechst) in blue. A, C Distribution of H4K20me3, H4K16ac, and HP1 in males that inherited the B chromosome from their father (paternal B). B, D Distribution of H4K20me3, H4K16ac, and HP1 in males that inherited the B chromosome from their mother (maternal B). Regardless of its parental origin, both histone marks and HP1 show a similar distribution on the B chromosome: H4K20me3 is present on the B chromosome at all stages of meiosis (A, B), while H4K16ac is absent before prometaphase I, appearing on the B chromosome at this stage and remaining throughout meiosis (C, D). HP1 serves as an additional marker for the B chromosome in addition to the visible change in intensity of Hoechst staining. Arrowheads point to B chromosomes when visible. (P I prophase I, Mid-P I mid-prophase I, PM I prometaphase I, M/A I metaphase/anaphase I, T I telophase I, M/A II metaphase/anaphase II, T II telophase II). Scale bar: 5 µm.

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