Explain What the Following Data Say About the Genetic and Environmental

question 34

Multiple Choice

Explain what the following data say about the genetic and environmental influence on each characteristic. How did you interpret these data? (MZ = monozygotic twins and DZ = dizygotic twins.) $$\begin{array} { | l | c c } \hline & { \text { Concordance in } } \\\hline \text { Trait } & \text { MZ } & \text { DZ } \\\hline \text { Right- or left-handedness } & 80 & 75 \\\hline \text { Manic depression } & 80 & 20 \\\hline\end{array}$$

• A) Handedness and manic depression both have a strong genetic basis and little or no environmental basis.
• B) Handedness and manic depression are both strongly affected by environmental factors with little or no genetic basis.
• C) Handedness and manic depression are strongly affected by both environmental factors and genetic factors.
• D) Handedness is strongly affected by environmental factors with little or no genetic basis, while manic depression is significantly affected by genetic factors.
• E) Handedness is significantly affected by both environmental and genetic factors, while manic depression is significantly affected by environmental factors with little genetic basis.

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Definitions:

Definitional Theory

A theory that focuses on classifying concepts or entities based on their defined attributes or characteristics.

Word Meaning

The definition or explanation of a word's significance or denotation.

Prototype Theory

A theory in cognitive science that suggests humans categorize objects and concepts in terms of typical or representative examples.

Bird

A warm-blooded vertebrate of the class Aves, characterized by feathers, beaks, the laying of hard-shelled eggs, and (in most cases) the ability to fly.