Main articles: Growth hormone 1 and Growth hormone 2. Genes for human growth hormone, known as growth hormone 1 (somatotropin) and growth hormone 2, are localized in the q22-24 region of chromosome 17 and are closely related to human chorionic somatomammotropin (also known as placental lactogen) genes.
The U-shape of the marginal cost curve is directly attributable to increasing, then decreasing marginal returns (and the law of diminishing marginal returns). As marginal product (and marginal returns) increases for relatively small output quantities, marginal cost declines.
CHARACTERISTICS OF THE MARGINAL COST CURVE interval and from 76.7 percent to 85.5 percent for the 800-pound interval. As the interval is moved to the right, the marginal cost increases from $18.52 to $20.61 for the 1000-pound interval and from $15.38 to $17.12 for the 800-pound interval.