Unit 4 Lesson 1

Mutations always harm species and lead to extinction.

Mutations create variation, which can help species adapt and survive.

Mutations have no effect on species survival.

Mutations only occur in extinct species.

Mutations, natural selection, migration, and environmental change

Only mutations and migration

Only natural selection and environmental change

Only migration and mutations

Helpful

Harmful

Neutral

All of the above

They blended in with soot-covered tree trunks, making them less visible to predators

They were able to fly faster than lighter-coloured moths

They reproduced more quickly due to increased food supply

They migrated to rural areas

Increase in air pollution

Reduction in air pollution

Decrease in lichen growth

Increase in tree trunk darkness

Mutations

Sexual reproduction

Gene shuffling during meiosis

Environmental pollution

Structural, Behavioral, Physiological

Physical, Emotional, Genetic

Inherited, Acquired, Learned

Dominant, Recessive, Hybrid

A camel storing fat in its hump

An elephant having large ears to keep cool

A bear hibernating in winter

A bird migrating south for the winter

It was proposed by Gregor Mendel.

It means all traits become more common in a population.

It is the process where organisms with beneficial traits survive and reproduce more.

It only applies to animals, not plants.

Overproduction

Competition

Mutations

Selection=Survival of the Fittest

There was variation between members of the same species.

All members of a species were identical.

Species did not adapt to their environment.

No new species were found.

Individuals with advantageous traits are more likely to survive and reproduce.

All individuals in a population survive equally well.

Traits do not affect survival or reproduction.

Populations never change over time.

Lack of survival traits for the environment

Rapid environmental change

Abundance of food resources

Stable climate

Mutation → Variation → Adaptation → Natural Selection → Survival/Extinction

Adaptation → Mutation → Variation → Natural Selection → Survival/Extinction

Natural Selection → Variation → Mutation → Adaptation → Survival/Extinction

Variation → Mutation → Adaptation → Survival/Extinction