For Several Phenotypes in the Human Population, It Is Clear

question 64

Essay

For several phenotypes in the human population, it is clear that more than just the genotype is influencing the expression of the trait. Analysis of human populations indicates that height and weight are examples of phenotypes under environmental influence as well as genotype. Provide evidence that would support the contention that both environment and genotype influence human weight.

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Definitions:

Festination

A phenomenon often observed in Parkinson's disease, characterized by rapid, short, shuffling steps.

Speech Disturbances

Disorders or conditions that affect the ability to produce sounds that create words, often indicative of neurological disorders or damage.

Hypokinesia

Reduced ability or slowness in movement, often seen in neurological conditions like Parkinson's disease.

Lesioning

The process of intentionally causing damage to body tissue, often in the brain, as a means of studying the functions of different regions.