Medical Definition of MOLECULAR GENETICS. : a branch of genetics dealing with the structure and activity of genetic material at the molecular level.ADVERTISEMENT.edical Definition of MOLECULAR GENETICS. : a branch of genetics dealing with the structure and activity of genetic material at the molecular level. Britannica.com: Encyclopedia article about molecular genetics.
We often think of exercise only as a health issue, but it has significant day-to-day effects on a dogâs behavior as well. Dogs â particularly puppies and young dogs â have a lot of energy, and if they donât get the chance to burn it off, destructive behavior is often the result. Dog parks are popular places for off-leash exercise and romping with other dogs, which is exactly what most dogs need. 2  However, not all dogs can play nicely with others. 3  If your dog doesnât like other dogs, the dog park is definitely not the place for him. 4  Doggie day care can exercise both his mind and body.
Exercise is beneficial but if you overdo it and exercise too much, your body will suffer. Key signs of exercising too much include. 1  making exercise a priority over personal relationships. 2  feeling withdrawal symptoms such as irritability when unable to exercise.