AUTHOR=Liehr Thomas TITLE=Editorial: Co-occurrence of numerical and structural aberration—small supernumerary marker chromosomes and B-chromosomes JOURNAL=Frontiers in Genetics VOLUME=15 YEAR=2024 URL=https://www.frontiersin.org/journals/genetics/articles/10.3389/fgene.2024.1408674 DOI=10.3389/fgene.2024.1408674 ISSN=1664-8021