Body cells contain a full set of chromosomes from each parent. These chromosomes contain matching gene sequences. Since body cells contain both sets from each parent, they are called . Or sex cells, have only one set of chromosomes and are called

Scientists often deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each of these numbers in an alternate form.