Natural Selection

Characteristics inherited from parents

Features determined by genetic mutations

Traits gained during an organism's lifetime

Qualities influenced by genetic variation

Changes in an organism's behaviour

A small change in DNA

Inherited traits passed down from one generation to the next

A molecule that stores genetic information

Random mutations cause offspring to look radically different from their parents

Individuals acquire new traits during their lifetime

Random mutations cause changes in DNA with each generation

Individuals with harmful genetic traits die before they can reproduce

a whole population

a single organism

Over many generations

Over a single lifetime

A tadpole turns into a frog

White fur becomes common in a population of wolves over thousands of years

A dog learns to sit and stay after weeks of training

A population of turtles develop longer necks over many generations

Genetic diversity increases the population's chance of surviving changes in its environment

Evolution requires some individuals to have a higher chance of surviving than others

Evolution requires individuals to have acquired traits that help them survive

Evolution is when variation in a population is eliminated, so that all individuals are identical

Disease

Access to food

Hotter climate

P

An increase in the number of genetic mutations

An increase in the variation in skin colour in the population

An increase in the frequency of the green colour trait

Predators hunted black and white moths equally

Camouflage increased the frequency of the white colour trait in the population

Predators acted as a selection pressure by hunting more white moths than black moths

Camouflage increased the likelihood of black peppered moths surviving and reproducing