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.
Figure 6.1 Kinked Demand Curve Model. If firms face such demand curves, the price, p*, is profit maximizing for any marginal cost curve (MC) that cuts the vertical section of the marginal revenue curve (MR).For example, p* is the profit-maximizing price for both MC.igure 6.1 Kinked Demand Curve Model. If firms face such demand curves, the price, p*, is profit maximizing for any marginal cost curve (MC) that cuts the vertical section of the marginal revenue curve (MR). For example, p* is the profit-maximizing price for both MC.