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Chapter 4

Psychology 1000 Chapter Notes - Chapter 4: Behavioural Genetics, Chromosome, Heredity


Department
Psychology
Course Code
PSYCH 1000
Professor
Derek Quinlan
Chapter
4

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Chapter 4 Key Terms
Adaptations: allow organisms to meet recurring environmental changes to
their survival, thereby increasing their reproductive ability
Adoption Study: a research method in behavior genetics in which adopted
people are compared on some characteristic with both their biological and
adoptive parents in an attempt to determine how strong a genetic
component the characteristic might have
Alleles: the two genes, one on each chromosome, that control the same
trait
Altruism: occurs when one individual helps another, but in so doing accrues
some cost
Biologically Based Mechanisms: mechanisms that receive input from the
environment, process the information, and respond to it
Chromosome: tightly coiled strand of deoxyribonucleic acid (DNA) and
protein that contains the genes
Concordance: the likelihood that two people share a particular
characteristic
Cooperation: situation in which one individual helps another and in so doing
gains some advantage
Domain-Specific Adaptations: adaptations designed to solve a particular
problem
Dominant Gene: a gene, which when present, will produce a particular
characteristic
Evolution: a change over time in the frequency with which particular genes
—and the characteristics they produce—occur within an interbreeding
population
Evolutionary Personality Theory: a recently developed attempt to
account for personality traits in terms of the evolutionary history of the
human species; these traits are thought to develop from processes of natural
selection
Gene Knockout: a procedure that alters a specific gene in a way that
prevents it from carrying out its normal function
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