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.
Marginal cost curve intersects the average variable cost curve and the average total cost curve at their minimum points. - When marginal cost is LESS than average cost, average cost is DECREASING-When marginal cost exceeds average cost, average cost is increasing.arginal cost curve intersects the average variable cost curve and the average total cost curve at their minimum points. - When marginal cost is LESS than average cost, average cost is DECREASING-When marginal cost exceeds average cost, average cost is increasing.