- Cape teacher accused of assaulting student at football game (10/23/16)41
- Pedestrian killed during traffic collision on I-55 (10/23/16)9
- Scott County Sheriff Rick Walter faces challenge from criminal investigator Wes Drury (10/21/16)8
- Shooting injures two people in Cape early Tuesday (10/19/16)34
- 18-year-old killed in one-car crash Thursday morning (10/21/16)1
- Man arrested after dispute at school spurs brief lockdown (10/21/16)6
- 'I feel for them' (10/20/16)1
- Hundreds turn out for VintageNOW fundraiser (10/23/16)3
- Crews are working on the new Drury Hotel (10/21/16)4
- Benton man accused of statutory rape, selling pot (10/20/16)1
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.