An experimental group is the group in an experiment that receives the variable being tested. One variable is tested at a time. The experimental group is compared to a control group, which does not receive the test variable. In this way, experimental groups are used to find answers in an experiment.
1 At around 9 months of age, babies begin to pull themselves up to a standing position. 2  By 10 months of age, a baby should be able to grasp objects with thumb and forefinger.
The Spot Timetable. Newborn Dalmatian puppies have white coats, but many of their spots are present as pigment in the skin. The color starts to grow into the hair when the pups are around 2 weeks old. When the puppies are 5 to 6 months, their spots become get darker and better defined. New spots typically continue to appear until Dalmatians are about 7 months old. The spots ideally are round, a dime to a half-dollar in size, and evenly spread over their body, preferably with smaller spots on the head and extremities.