There was an error sending your feedback. The study showed that there are epigenetic differences between high- and low-nurtured rats. Highly nurtured rat pups tend to grow up to be calm adults, while rat pups who receive little nurturing tend to grow up to be anxious. Others seem to ignore their pups. The GR gene gets turned on, cells make more GR protein, and the rat takes on a more relaxed personality. I was doing some studying about genetics and my online study guide directed me to this little activity. View Awards Find Funding.
Stress circuitry activates the adrenaline-driven Fight or Flight response and causes the hormone cortisol to be released into the bloodstream.
Lick Your Rats
The epigenetic code allows certain types of information to be passed to offspring without having to go through the slow processes of random mutation and natural selection. Some mother rats spend a lot of time licking, grooming and nursing their pups. So take heart -- your epigenetic destiny is not written in permanent ink. This girl talks to you about stuff while you are a mom rat licking your baby rat But whee for free range time! Mom's behavior actually programs the pups' DNA in a way that will make them more likely to succeed. Cognition and Behavior; G.