In human genetics, 'Color blindness' is an X-linked recessive trait. If a colorblind man marries a carrier woman, what is the probability that their son will be colorblind? MCQ with Answer and Explanation

Explanation:
Somatostatin is a powerful, universal inhibitory peptide hormone. In the gastrointestinal tract and pancreas, it is secreted by the Delta (D) cells of the pancreatic islets and the D cells of the gastric and intestinal mucosa. Its primary role in the GI tract is to act as a paracrine inhibitor, suppressing the release of almost all other gastrointestinal hormones, including gastrin, secretin, cholecystokinin (CCK), vasoactive intestinal peptide (VIP), and gastric inhibitory peptide (GIP). It also inhibits gastric acid secretion, pancreatic enzyme secretion, and intestinal motility, acting as a 'brake' on the digestive system.

Explanation:
Vitamin E is a group of tocopherols and tocotrienols, acting as fat-soluble antioxidants. They protect cell membranes from oxidative damage. Deficiency is rare but can cause hemolytic anemia and neurological problems.

Explanation:
Erythropoietin (EPO), mainly from kidneys, promotes erythropoiesis in bone marrow. Thrombopoietin stimulates platelets, interleukins are immune cytokines, CSFs for white blood cells. EPO is used to treat anemia.