Sickle-Cell Anemia Is a Disease That Alters the Structure of Hemoglobin

question 19

Essay

Sickle-cell anemia is a disease that alters the structure of hemoglobin, and in turn, can cause severe health problems in individuals if left untreated. The disease is expressed in homozygous recessive individuals, whereas the heterozygous condition usually does not result in any symptoms of the disease. Sickle-cell anemia primarily affects Africans and Caucasians of Mediterranean descent. Typically, when a disease occurs only in the homozygous recessive condition, the incidence of the gene in the population is predicted to decline overtime, particularly when it can be detected either phenotypically or by genetic testing. In East Africa, the disease still occurs in about 40% of the population. Give an explanation for why the incidence of the disease has remained so high in African populations.

Evaluate the effects of price changes on the demand for labor and other resources, considering the substitution and output effects.

Comprehend the role of marginal revenue product (MRP) and marginal resource cost (MRC) in resource hiring decisions.

Understand the implications of the law of diminishing returns on the MRP curve and hiring practices.

Identify how the productivity and market value of resources influence their demand.

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Definitions:

Activation-Synthesis Hypothesis

Premise that states that dreams are created by the higher centers of the cortex to explain the activation by the brain stem of cortical cells during REM sleep periods.

Sleep Deprivation

The condition of not having enough sleep, which can lead to a range of psychological and physical problems, including impaired judgment, mood swings, and reduced cognitive performance.

Memory

The cognitive process that involves encoding, storing, and retrieving information.

Stimulants

Substances that increase nervous system activity, resulting in enhanced alertness, attention, and energy, which can include drugs like caffeine, nicotine, and amphetamines.