Principles of Evolution
🚩Natural Selection (Cacioppo & Freberg, 2016)
Descent with modification
🚩 Mutation (Cacioppo & Freberg, 2016)
Errors in DNA replication
🚩Migration (Cacioppo & Freberg, 2016)
🚩Genetic Drift (Cacioppo & Freberg, 2016)
🚩Fitness (Cacioppo & Freberg, 2016)
🚩Adaptation (Cacioppo & Freberg, 2016)
Charles Darwin
reproduction and survival pressures
EXAMPLE: blue eyes in humans (Hullinger, 2015)
People lived near the Black Sea and developed a mutation of blue eyes
Two partners with blue eyes had sexual intercourse to keep trait in future generations
EXAMPLE: people changing location (Gray & Jordan, 2000)
due to changing climate
due to changing landscape
due to inadequate food
EXAMPLE: different hair (Dorey, 2015)
curly
straight
better in hot climates
evaporation of sweat in your neck
keeps neck and head warm
better in cold climates
Moving to new location for specific reasons
Ability of a genotype to reproduce
Genetic changes
Random; Accidental
Environmental factors
EXAMPLE: mother having 12 children
Process of change because of natural selection
EXAMPLE: only red hair in villages (Your Dictionary, n.d.)
due to random births with no other hair colour
increases her biological "fitness"
EXAMPLE: early humans hand shape (Young, 2003)
toss a spear or throw a rock the best and survive