Sex chromosomes of birds as reservoir for jumping genes

Occurring in the genomes of most living organisms, transposable elements (TEs) are short DNA sequences that have the ability change their position. By means of various molecular mechanisms—so-called copy-paste or cut-and-paste—they ...

Myelin is a gift from retroviruses

A viable molecular explanation for the origin of compact myelin of vertebrates has been a long time coming. While many invertebrates are certainly capable of wrapping their axons with crude glial extensions, none can manage ...

One gene closer to a super sorghum

Scientists are honing the traits of speed, strength and near invulnerability in an important food crop that, much like a superhero, will help protect the vulnerable.

Corn's genetic diversity on display in new genome study

The newly assembled genomes of 26 different genetic lines of corn illustrate the crop's rich genetic diversity and could pave the way for a better understanding of what genetic mechanisms account for crop traits prized by ...

Being social generates larger genomes in snapping shrimp

In an article scheduled to publish in PNAS, on June 7, 2021, a team of researchers led by Columbia University's Dustin R. Rubenstein, a Professor of Ecology, Evolution and Environmental Biology, found that within the same ...

Researchers report reference genome for maize B chromosome

Three groups recently reported a reference sequence for the supernumerary B chromosome in maize in a study published online in PNAS. Dr. James Birchler's group from University of Missouri, Dr. Jan Barto's group from Institute ...

The importance of DNA compaction in tissue formation

Scientists led by Dr. Salvador Aznar-Benitah, head of the Stem Cells and Cancer laboratory at IRB Barcelona, have described the alterations that occur during mammary gland formation when heterochromatin (the part of DNA that ...

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