lecture 3 #1 Flashcards
Genes in every cell of our body – contain
dna
Genotype
the specific combination of genes that form an individuals dna
Phenotype
the physical or behavioural traits that an individual possesses
Behavioural genomics
the field devoted to investigating how a persons genetic code influences their psychological traits
Human genome project
provided a complete list of the genes found in humans and their distribution on human chromosomes – most traits based on multiple genes (not just one
Behavioural genetics
the field to investigating the extent that genes vs. a persons environment contribute to particular psychological traits
Identical
(monozygotic) – one sperm, one egg, shared placenta
Fraternal (
dizygotic) 2 sperm 2 eggs, separate placentas
Heritability
a number between 1 and 1.0 that represents the proportion of differences in a trait across individuals is caused by genetic influences
number for heritability of depression and anxiety for 3 year olds is .76… for 12 year olds it is .48
Charles Darwin
theory of evolution – explained origin of our genes – explains why we are the way that we are – traits will be passed along to more generations if they help species survice and reproduce
Evolutionary psychology
a field aimed at revealing how the traits that we inherited from our ancestors (and that we share with one another) control our thoughts and behaviours
Intrasexual selection
members of the same sex (males) physically battle for the chance to mate with other sex (females)
members of the same sex (males) physically battle for the chance to mate with other sex (females)
Intrasexual selection
Intersexual selection
males compete through dances, making a nest, showing colourful colours
males compete through dances, making a nest, showing colourful colours
Intersexual selection
