evolution Flashcards
what is a genotype
refers to the genetic makeup of an organism
what is phenotype
physical characteristics determined by genes and the environment
what are dominant genes
strong
more represntative
what are recessive genes
weaker gene
not expressed
what is an example of an environment trigger on genes
oxygen level
humidity
light cycle
what is evolution
inherited characteristics that are developed in organisms and are evolved slow process
what is natural selection
the differential survival and reproduction of individuals due to differences in phenotype
how does natural selection effect population
population ill have a higher percentage of survival and less disadvantaged genes
what is a heritable trait
many characteristics have a genetic tendent combined with experience in the environment
what is sexual selection
a type of natural selection and competition for mates along with the development of characteristics that aid reproductive success drive evolution
what is the role of the pre-frontal cortex
regulates our thoughts, actions and emotions
where is the amygdala found
in the prefrontal cortex
what is the thalamus responsible for
relaying sensory and motor signals as well as a regulation of consciousness and alterness
what is the amygdala responsible for
emotional control
memory and learning
what is hypothalamus responsible for
releasing hormones, managing sexual behaviour, regulating emotional responses