- Missing Jackson woman found dead in Bollinger County pond (06/23/16)4
- Many Jackson students may face random drug-testing (06/26/16)30
- Village of Zalma must disincorporate, law says (06/23/16)5
- Jackson man accused of felony assault after attack at Cape bar (06/26/16)7
- Coroner asks for grand jury in Poplar Bluff fatal hit-and-run case (06/28/16)1
- Four men accused of roles in three robberies (06/29/16)3
- Witness says he saw suspect kill his best friend (06/24/16)
- Officials: Ash borer less of a problem here than in St. Louis (06/27/16)
- Cape detective who helped solve Krajcir case is retiring (06/28/16)8
- Police: Cape man kidnapped woman, then raped, assaulted her (06/30/16)5
Single gene may stymie many cloning efforts
Scientists say they've identified a single gene that could explain most failures to clone mammals.
Cloning involves taking DNA from a cell of an adult animal and putting it into an unfertilized egg. So the DNA must switch gears, telling the egg how to divide and grow into a new individual. The switchover requires shutting some genes off and turning others on.
The problem with the gene, called "Oct4," doesn't explain every failure, but it could account for about 90 percent, said researcher Hans Schoeler of the University of Pennsylvania's veterinary school in Kennet Square, Pa.