This means that they have 8 copies of every gene (and 8 copies of every chromosome). Humans have only two copies of every gene, as do most animals. However, one of the many cool things about plants is that they often undergo ploidy event...

Crop genome evolution tools just got a major upgrade: USDA scientists used mobile DNA timestamps embedded in plant chromosomes to date three ancient mergers that built the octoploid strawberry — all without sequencing extinct ancestors — with direct implications for wheat, cotton, and sugarcane polyploid crop breeding.

A new study introduces a genome-wide approach for untangling these complex genetic histories. The method takes advantage of evolutionary signatures left behind by long terminal repeat retrotransposons, a type of mobile DNA sequence. By comparing patterns of similarity among these elements across chromosomes, researchers can identify distinct subgenomes and estimate when major genome-merging events occurred. When applied to the cultivated octoploid strawberry, the technique revealed a step-by-step evolutionary history shaped by multiple rounds of allopolyploidization, providing new insight into how complex plant genomes form and diversify over millions of years. Why Polyploid Genomes Are Difficult To Decipher Whole-genome duplication has played a major role in plant evolution, helping drive innovation, adaptation, and the emergence of many crop species. In allopolyploid plants, chromosome sets originate from different ancestral genomes. These chromosome groups, known as subgenomes, continue to evolve and interact long after the original hybridization events. Identifying those subgenomes is crucial for understanding how a species evolved. Traditional approaches often depend on comparing a polyploid genome with known diploid ancestors. The problem is that many ancestral species are either extinct or have not yet been identified. Transposable elements offer another source of information. Long terminal repeat retrotransposons accumulate in characteristic patterns...

Nextflow pipeline for polyploid CRISPR amplicon genotyping - rj-price/PolySNiP-nf

YouTube video by Octoploid - Topic

AbstractBackground and Aims. Cardamine occulta (Brassicaceae) is an octoploid weedy species (2n = 8x = 64) originated in Eastern Asia. It has been introduc