Brain and Twin Studies Are Consistent with the Idea That

question 13

Multiple Choice

Brain and twin studies are consistent with the idea that sexual orientation is partially determined by biological or genetic factors, but a cause-effect relationship has not been established because:

• A)the brain and twin studies data are correlational
• B)the brain and twin studies do not match other recent data that show no biological factor
• C)not all of the identical twins have the same orientation
• D)sexual orientation is too difficult to classify

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Definitions:

Inherited Traits

Genetic characteristics passed down from parents to offspring, determining various physical and, to some extent, psychological features of individuals.

Phenotypes

The visible attributes or qualities of an organism that arise from the interplay between its genetic makeup and environmental factors.

Genotypes

The genetic makeup of an organism, consisting of all the inherited alleles that influence traits and characteristics.

Monozygotic Twins

Identical twins resulting from a single fertilized egg splitting into two, sharing the exact genetic makeup.