Joel is comparing two slides showing chromosomes in a sperm cell and a skin cell of a dog. he finds that the sperm cell has 39 chromosomes. how many chromosomes can he expect in the skin cell?

Since a sperm cell contains half the number of chromosomes (a result of meiotic cellular division) as the body cells, the regular, diploid, cells would contain 78 chromosomes. You simply double the haploid to find the diploid or divide the diploid in half to find the haploid.

The digestion of carbohydrates begins in the mouth. The salivary enzyme amylase begins the breakdown of food starches into maltose, a disaccharide. As the bolus of food travels through the esophagus to the stomach, no significant digestion of carbohydrates takes place.

Explanation: