A closer look revealed that the heavily -
duplicated gene contained its own duplications: six copies of a domain called DUF1220.
Not exact matches
And because researchers break apart and then reassemble the 3 - billion - letter - long genetic instruction book in order to analyze it, sections that have
duplicated genes are harder to put in the right order and thus harder to study, which was the case with the region
containing the red blood cell protein DNA.
The scientists also discovered that
genes modified only by one of the epigenetic markers, H3K4me3,
contain the DNA recipes for proteins that enable an ES cell to proliferate, or
duplicate itself.