Evidence of Evolution
These body parts have lost their original function over time.
Vestigial Structures
This is a trait that helps an organism survive in its environment.
Adaptation
The shape of this body part was different among the finches Darwin observed.
Beaks
Small differences within a species are called ____.
Variation
These types of structures are similar in structure but have different jobs.
Homologous Structures
Some bacteria survive antibiotics and pass on their resistance. Over many generations, most bacteria are resistant. This is an example of ____.
Evolution
The ship Darwin traveled on during his studies.
HMS Beagle
A group of organisms that can reproduce and have fertile offspring.
Species
Whales have small, unused pelvic bones, which are an example of this type of structure.
Vestigial Structure
Giraffes having long necks to reach food is an example of this.
Adaptation
Darwin studied finches on these islands.
Galapagos
The process by which species gradually change over time.
Evolution
A molecule used to determine how closely related species are.
DNA
Natural selection is also known as ________.
Survival of the fittest.
Before Darwin, this scientist believed that giraffe necks grew as they stretched their necks to reach tall branches.
Jean-Baptiste Lamarck
To produce offspring or create new individuals of the same species.
Reproduce
Humans, cats, whales, and bats all have similar arm bone structures, making them this type of structure.
Homologous Structure
Dark-colored moths being favored due to pollution is an example of this process.
Natural Selection
Darwin noticed that finches’ beaks were adapted to their type of _____.
Food
A permanent change in an organism’s DNA that can lead to variation.
Mutation