When the equinox gene appears, repair transitions into regrowth

When animals experience a large injury, such as the loss of a limb, the body immediately begins a wound healing response that includes sealing the wound site and repairing local damage. In many animals, including humans, ...

Uncovering the mysteries of methylation in plants

Growing up is a complex process for multi-celled organisms—plants included. In the days or weeks it takes to go from a seed to a sprout to a full plant, plants express hundreds of genes in different places at different ...

How some tissues can 'breathe' without oxygen

Humans need oxygen molecules for a process called cellular respiration, which takes place in our cells' mitochondria. Through a series of reactions called the electron transport chain, electrons are passed along in a sort ...

How sea stars get their symmetry

In a paper published Nov. 4 in the journal Current Biology, Zak Swartz, a postdoctoral researcher at Whitehead Institute, along with researchers in the lab of Whitehead Institute Member Iain Cheeseman and collaborators at ...

So-called 'junk' DNA plays a key role in speciation

More than 10 percent of our genome is made up of repetitive, seemingly nonsensical stretches of genetic material called satellite DNA that do not code for any proteins. In the past, some scientists have referred to this DNA ...

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