BIOLOGICAL BASES OF BEHAVIOR
BIOLOGICAL PSYCHOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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trait differences among individuals are attributable to genetic variations.
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unrelated individuals share common genes.
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nurture controls a trait rather than nature.
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adult personality is determined by infant personality.
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Detailed explanation-1: -In scientific terms, heritability is a statistical concept (represented as h²) that describes how much of the variation in a given trait can be attributed to genetic variation.
Detailed explanation-2: -Listen to pronunciation. (HAYR-ih-tuh-BIH-lih-tee) The proportion of variation in a population trait that can be attributed to inherited genetic factors. Heritability estimates range from 0 to 1 and are often expressed as a percentage.
Detailed explanation-3: -In fact, heritability is formally defined as the proportion of phenotypic variation (VP) that is due to variation in genetic values (VG). Genotypes or genotypic values are not passed on from parents to progeny; rather, it is the alleles at the loci that influence the traits that are passed on.
Detailed explanation-4: -Heritability, in a general sense, is the ratio of variation due to differences between genotypes to the total phenotypic variation for a character or trait in a population.
Detailed explanation-5: -Heritability is the ratio of genetic variance (VG) to phenotypic variance (VP) and ranges from 0 to 1. High heritability values of 0.5 mean that on average half of the differences among phenotypes of animals are genetic. Low values of approximately 0.1 mean that most of the differences are not genetic.