Darwin & The Beagle
Darwin served as this type of scientist, collecting biological and geological specimens during his travels.
What is a Naturalist?
This term describes hereditary changes in groups of living organisms over time.
What is Evolution?
Anatomically similar structures inherited from a common ancestor.
What are Homologous Structures?
Selective breeding used to produce offspring with desired traits, like different dog breeds.
What is Artificial Selection?
This was the name of the ship Darwin traveled on during his five-year voyage.
What is the HMS Beagle?
Darwin’s theory based on four ideas: excess reproduction, variations, inheritance, and advantages of traits
What is Natural Selection?
A reduced form of a functional structure that indicates shared ancestry, such as a flightless bird's wings.
What are Vestigial Structures?
This type of selection removes organisms with extreme expressions of a trait, favoring the average.
What is Stabilizing Selection?
Darwin's famous book, published in 1859, which outlined his theory of evolution.
What is "On the Origin of Species"?
The measure of a trait's relative contribution to the following generation.
What is Fitness?
This morphological adaptation allows an organism to blend into its surroundings.
What is Camouflage?
Speciation that occurs when a population is divided by a geographic barrier.
What is Allopatric Speciation?
While visiting these islands, Darwin observed that species were unique to each island but similar to those on the mainland.
What are the Galapagos Islands?
A random change in the allelic frequencies in a population.
What is Genetic Drift?
Structures that have the same function but different construction and were NOT inherited from a common ancestor.
What are Analogous Structures?
When one species evolves to resemble another species for protection or advantages.
What is Mimicry?
Darwin hypothesized that new species could develop this way from small, incremental changes.
What is gradually?
This principle states that allele frequencies stay the same unless affected by a factor that causes change.
What is the Hardy-Weinberg Principle?
The study of the distribution of plants and animals around the world.
What is Biogeography?
This theory suggests evolution occurs with sudden periods of speciation followed by long periods of stability.
What is Punctuated Equilibrium?