![ASHG on X: "#Chromosome 20 is only a quarter of the size of #chromosome 1. It's small but mighty – number 20 has over 500 human genes! #GENEfacts https://t.co/ICH64Z5zRA" / X ASHG on X: "#Chromosome 20 is only a quarter of the size of #chromosome 1. It's small but mighty – number 20 has over 500 human genes! #GENEfacts https://t.co/ICH64Z5zRA" / X](https://pbs.twimg.com/media/EWEQCnYXgAEIbVL.jpg)
ASHG on X: "#Chromosome 20 is only a quarter of the size of #chromosome 1. It's small but mighty – number 20 has over 500 human genes! #GENEfacts https://t.co/ICH64Z5zRA" / X
![Potential synteny between mouse chromosome 1 and human chromosome 1... | Download Scientific Diagram Potential synteny between mouse chromosome 1 and human chromosome 1... | Download Scientific Diagram](https://www.researchgate.net/publication/233325954/figure/fig1/AS:203198229946383@1425457641207/Potential-synteny-between-mouse-chromosome-1-and-human-chromosome-1-quantitative-trait.png)
Potential synteny between mouse chromosome 1 and human chromosome 1... | Download Scientific Diagram
![Mutations in RERE gene result in features that coincide with those associated with 1p36 deletion syndrome - Baylor College of Medicine Blog Network Mutations in RERE gene result in features that coincide with those associated with 1p36 deletion syndrome - Baylor College of Medicine Blog Network](https://blogs.bcm.edu/wp-content/uploads/2016/05/chromosome-1-human-ideogram.png)
Mutations in RERE gene result in features that coincide with those associated with 1p36 deletion syndrome - Baylor College of Medicine Blog Network
![Ideogram of chromosome 1 showing approximate location of the linkage... | Download Scientific Diagram Ideogram of chromosome 1 showing approximate location of the linkage... | Download Scientific Diagram](https://www.researchgate.net/publication/23307743/figure/fig2/AS:195994256973825@1423740080146/Ideogram-of-chromosome-1-showing-approximate-location-of-the-linkage-region-and-each.png)
Ideogram of chromosome 1 showing approximate location of the linkage... | Download Scientific Diagram
![Schematic representation of chromosome 1, showing the novel arCRD locus... | Download Scientific Diagram Schematic representation of chromosome 1, showing the novel arCRD locus... | Download Scientific Diagram](https://www.researchgate.net/publication/12273943/figure/fig1/AS:601750172082189@1520479829540/Schematic-representation-of-chromosome-1-showing-the-novel-arCRD-locus-and-relative.png)
Schematic representation of chromosome 1, showing the novel arCRD locus... | Download Scientific Diagram
![ASHG on X: "Chromosomes are numbered by their length with only one exception (21). That means that #chromosome 1 is the longest of them all! Chromosome 1 spans 249 million DNA base ASHG on X: "Chromosomes are numbered by their length with only one exception (21). That means that #chromosome 1 is the longest of them all! Chromosome 1 spans 249 million DNA base](https://pbs.twimg.com/media/EUh66t2XkAA1VSz.png)