Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2023 Feb 13;120(8):e2216641120. doi: 10.1073/pnas.2216641120

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2023 the Author(s). Published by PNAS.

This open access article is distributed under Creative Commons Attribution License 4.0 (CC BY).

PMC Copyright notice

Fig. 5. — The expansion of PCH and amplicons. (A) The dot-chromosomes have larger PCH and the proportion of PCH is higher relative to microchromosomes and macrochromosomes. (B) Chicken chr12 and chr29 are homologous with amphioxus chr4. Six ohnolog pairs between chr29 and chr12 are highlighted. The PCH region of chr29 is rich in TEs while the non-PCH region is depleted of retrotransposons but is enriched for the PO41 repeats (37). (C) Satellite DNA is the most abundant repeat sequence on dot-chromosomes. (D) In macrochromosome and microchromosomes the relative H3K9me3 levels are similar for LINEs and satellite DNA while in dot-chromosomes the satellite DNA tends to have a lower relative H3K9me3 level (red dashed ellipse). (E) The PCH of dot chromosomes contains a large number of multicopy genes. Each green vertical bar represents one copy. (F) OR29G was detected in the PCH of chr29 while the synthesized oligonucleotides (oligo-chr29) were detected in the other part of chr29. (G) The expression of multicopy genes is testis-biased for seven out of the 10 dot chromosomes.