A lover of chromosome biology 🧬🔬🔎 Studying (not only) meiosis, centromeres & genome evolution in plants! Group leader at MPI for Plant Breeding Research in Cologne, Germany Lab website: https://www.mpipz.mpg.de/5028512/marqueshttps://bsky.app/profile/amarques.bsky.socialhttps://bsky.app/profile/amarques.bsky.social/post/3mwbd375vh227Out now in @nature.com Research Briefings: Rhynchospora tenuis makes gametes without meiotic crossovers yet retains sexual reproduction. Only seeds that restore the parental chromosome combination are viable, giving clone-like offspring #meiosis4eva #SexualReproduction https://www.nature.com/articles/d41586-026-02789-724 Sep 2026 13:05 +0000at://did:plc:2wgziobyeaserfm6we5shnnd/app.bsky.feed.post/3mwbd375vh227https://bsky.app/profile/amarques.bsky.social/post/3mvx473qozs2nThis looks like an awesome review! Looking forward to reading it 🙌 congratulations @needhibhalla.bsky.social and @lacefieldlab.bsky.social [contains quote post or other embedded content]20 Sep 2026 11:36 +0000at://did:plc:2wgziobyeaserfm6we5shnnd/app.bsky.feed.post/3mvx473qozs2nhttps://bsky.app/profile/amarques.bsky.social/post/3mvujur4twc2jOur new paper in collaboration with @brandgefahr.bsky.social and the RinkLab https://www.nature.com/articles/s41467-026-74605-919 Sep 2026 11:02 +0000at://did:plc:2wgziobyeaserfm6we5shnnd/app.bsky.feed.post/3mvujur4twc2jhttps://bsky.app/profile/amarques.bsky.social/post/3mvua6kufrs22Top 1% in @qedscience.bsky.social is now officially published in @nature.com [contains quote post or other embedded content]19 Sep 2026 08:09 +0000at://did:plc:2wgziobyeaserfm6we5shnnd/app.bsky.feed.post/3mvua6kufrs22https://bsky.app/profile/amarques.bsky.social/post/3mvnk57ztpk24Out today in Nature: sex without crossovers. Rhynchospora tenuis makes pollen, fertilises and sets seed, yet 0 crossovers in 10,997 pollen nuclei. Chromosome drive and ~87% seed abortion rebuild the mother's genotype, so the offspring are clones. https://doi.org/10.1038/s41586-026-11057-7 [contains quote post or other embedded content]16 Sep 2026 16:19 +0000at://did:plc:2wgziobyeaserfm6we5shnnd/app.bsky.feed.post/3mvnk57ztpk24https://bsky.app/profile/amarques.bsky.social/post/3mvrhkr3wp227https://www.derstandard.de/story/3000000340184/pflanze-aus-brasilien-stellt-lehrbuchwissen-ueber-sinn-der-sexualitaet-infrage18 Sep 2026 05:43 +0000at://did:plc:2wgziobyeaserfm6we5shnnd/app.bsky.feed.post/3mvrhkr3wp227https://bsky.app/profile/amarques.bsky.social/post/3mvpzlor5m226Brazilian sedge reproduces sexually but without DNA reshuffling, producing genetic clones https://phys.org/news/2026-09-brazilian-sedge-sexually-dna-reshuffling.html via @phys.org.web.brid.gy17 Sep 2026 16:00 +0000at://did:plc:2wgziobyeaserfm6we5shnnd/app.bsky.feed.post/3mvpzlor5m226https://bsky.app/profile/amarques.bsky.social/post/3mvnk57ztpk24Out today in Nature: sex without crossovers. Rhynchospora tenuis makes pollen, fertilises and sets seed, yet 0 crossovers in 10,997 pollen nuclei. Chromosome drive and ~87% seed abortion rebuild the mother's genotype, so the offspring are clones. https://doi.org/10.1038/s41586-026-11057-7 [contains quote post or other embedded content]16 Sep 2026 16:19 +0000at://did:plc:2wgziobyeaserfm6we5shnnd/app.bsky.feed.post/3mvnk57ztpk24https://bsky.app/profile/amarques.bsky.social/post/3ms6w5j63ac23New preprint from the lab! [contains quote post or other embedded content]03 Aug 2026 16:28 +0000at://did:plc:2wgziobyeaserfm6we5shnnd/app.bsky.feed.post/3ms6w5j63ac23https://bsky.app/profile/amarques.bsky.social/post/3mpdpmudsbs2fHeading now to #Copenhagen for attending the @official-smbe.bsky.social with several team members. Looking forward to exciting conversations and networking! Hope to see some of you there!28 Jun 2026 09:59 +0000at://did:plc:2wgziobyeaserfm6we5shnnd/app.bsky.feed.post/3mpdpmudsbs2fhttps://bsky.app/profile/amarques.bsky.social/post/3mozugeavuk2gHappy to have two preprints of the lab featured within the 1% Read them: Sex without crossovers mimics clonal reproduction in Rhynchospora tenuis https://www.biorxiv.org/content/10.64898/2026.01.17.700054v2 Pangenome analysis reveals the evolutionary dynamics of repeat-based holocentromeres https://www.biorxiv.org/content/10.64898/2026.01.17.700053v1 [contains quote post or other embedded content]24 Jun 2026 11:58 +0000at://did:plc:2wgziobyeaserfm6we5shnnd/app.bsky.feed.post/3mozugeavuk2g