Question:
Which of the following is/are included under behavioural genetics studies in humans?
Which of the following is/are included under behavioural genetics studies in humans?
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For human behavioural genetics, remember the trio: {family, twin, adoption}. Anything requiring experimental mating (selective breeding) is out for humans.
Updated On: Aug 30, 2025
- Selective breeding studies
- Family studies
- Twin studies
- Adoption studies
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Verified By Collegedunia
The Correct Option is B, C, D
Solution and Explanation
Step 1: Concept. Behavioural genetics in {humans} infers genetic and environmental influences using naturally occurring relationships, not experimental breeding. The classic human designs are {family}, {twin}, and {adoption} studies.
Step 2: Evaluate options.
(A) Selective breeding studies — Not used in humans (unethical/implausible). \Rightarrow Not included.
(B) Family studies — Compare trait similarity among biological relatives across degrees of relatedness. \Rightarrow Included.
(C) Twin studies — Compare MZ vs DZ twins to partition heritability and shared environment. \Rightarrow Included.
(D) Adoption studies — Contrast resemblance to biological vs adoptive parents to separate genes from rearing environment. \Rightarrow Included.
Conclusion: Only (B), (C), and (D) are human behavioural genetics methods.
Step 2: Evaluate options.
(A) Selective breeding studies — Not used in humans (unethical/implausible). \Rightarrow Not included.
(B) Family studies — Compare trait similarity among biological relatives across degrees of relatedness. \Rightarrow Included.
(C) Twin studies — Compare MZ vs DZ twins to partition heritability and shared environment. \Rightarrow Included.
(D) Adoption studies — Contrast resemblance to biological vs adoptive parents to separate genes from rearing environment. \Rightarrow Included.
Conclusion: Only (B), (C), and (D) are human behavioural genetics methods.
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