The difference in the genetic relationship between two fraternal twins versus two identical twins is critical to behavioral genetics-based research because
A) identical twins have more canalized traits.
B) fraternal twins have significantly different environmental experiences.
C) identical twins are more genetically similar than fraternal twins.
D) fraternal twins have a much smaller range of reactions.

Question

Quizplus · Accepted Answer

Identical twins are more genetically similar than fraternal twins, as they share 100% of their genes compared to fraternal twins who only share about 50% of their genes. This genetic difference is critical to behavioral genetics-based research as it allows researchers to more accurately distinguish between the influence of genetic factors and environmental factors on behavioral traits.

The Difference in the Genetic Relationship Between Two Fraternal Twins