The Biological Approach: the influence of genes on behaviour
- Created by: pavankhosa
- Created on: 07-01-17 17:28
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- The influence of genes on behaviour
- genotype and phenotype
- not always a direct relationship between the two
- e.g. eye colour
- someone may inherit a recessive gene for blue eyes
- this will not be expressed if they also inherited a dominant gene for brown eyes from other parent
- we can't determine the genotype from just observing the phenotype
- this will not be expressed if they also inherited a dominant gene for brown eyes from other parent
- someone may inherit a recessive gene for blue eyes
- e.g. eye colour
- phenotype
- the physical appearance that results from the inherited info
- genotype
- genetic code
- 'written' in the DNA of an individual's cells
- not always a direct relationship between the two
- the genetic basis of behaviour:
- each individual differs from the next
- because each one of us possesses a unique combination of genetic instructions
- personality
- intelligence
- heritability
- amount of variability in a trait within a population
- that can be attributed to genetic differences between individuals within that population
- the more a trait is influenced by genetic factors, the greater its heritability
- example: studies of identical twins
- the variation in individual intelligence could be 60-80% due to genes
- example: studies of identical twins
- amount of variability in a trait within a population
- each individual differs from the next
- genes:the mechanisms of heredity
- heredity
- the reason why offspring 'take after' their parents in terms of psychological characteristics
- passing of characteristics from one generation to the next through the genes
- specific characteristic
- how they develop
- depends on the influence of the environment
- depends on the interaction of the gene with other genes
- genes carry the instructions for a specific characteristic
- how they develop
- the nature-nurture debate
- the extent to which a psychological characteristic is determined by genes or the environment
- heredity
- genotype and phenotype
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