Forks colliding: How DNA breaks during re-replication

Leveraging a novel system designed to examine the double-strand DNA breaks that occur as a consequence of gene amplification during DNA replication, Whitehead Institute scientists are bringing new clarity to the causes of ...

Baby cells learn to communicate using the lsd1 gene

We would not expect a baby to join a team or participate in social situations that require sophisticated communication. Yet, most developmental biologists have assumed that young cells, only recently born from stem cells ...

Stem cell progeny tell their parents when to turn on

(Phys.org) —Stem cells switch off and on, sometimes dividing to produce progeny cells and sometimes resting. But scientists don't fully understand what causes the cells to toggle between active and quiet states.

Researchers solve mystery of long elephant pregnancy

(Phys.org) -- For years biologists have puzzled over how it is that elephants are able to maintain such long pregnancies, which typically run to nearly two years. While many theories have been tossed around, no one really ...

For Stem Cells, Practice Makes Perfect

(PhysOrg.com) -- Multipotent stem cells have the capacity to develop into different types of cells by reprogramming their DNA to turn on different combinations of genes, a process called "differentiation." In a new study, ...

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