Home › AP Psychology › Psychology › Biopsychology › The epigenetic perspective differs from the rang…
The epigenetic perspective differs from the range of reaction view because in epigenetics:
AEnvironment has no measurable influence on any trait
BGenes alone determine the phenotype that will appear
CThe genotype is not treated as fixed and limiting
DOnly identical twins can show any phenotypic variation
Answer & Solution
Correct answer: C. The genotype is not treated as fixed and limiting
1. Range of reaction asserts that our genes set the boundaries within which we can operate, and the environment determines where in that range we fall.
2. On that view genes impose a definite limit on potential and the environment decides how much of it is achieved.
3. Epigenetics looks beyond the genotype itself and studies how the same genotype can be expressed in very different ways.
4. The chapter states the contrast directly: the epigenetic perspective is very different from range of reaction because there the genotype is not fixed and limited.
5. Its illustration is a pair of identical twins with exactly the same genetic material, one of whom developed cancer in childhood while the other did not.
_Source: OpenStax Psychology (1st ed., CC BY 4.0), Ch 3 "Biopsychology", §3.1 Human Genetics_
Related questions
The chapter describes hyperthyroidism as producing which set of symptoms?A researcher needs to track brain activity with millisecond accuracy but does not need to After surgery removed his hippocampus, the patient known as H.M. could still learn new skiWhat caution does the chapter attach to the famous case of Phineas Gage?A split-brain patient cannot name a picture shown in the left visual field, yet can draw iIn the adoption study reported in the chapter, the highest rate of schizophrenia was foundThe idea that a child of a professional athlete is exposed early to that sport, and that tWhy is the sickle-cell allele described as adaptive in regions where malaria is common?