Dog breeds are an example of . . .
Artificial selection
Evolution by definition is . . .
change over many generations.
The biggest process to evolution is . . .
Natural selection
Natural selection is also known as . . .
survival of the fittest
Evolution can result in
new species
Evolution was established by
Charles Darwin
An example of molecular evidence
DNA
Structures with the same parts but have different functions, suggesting that organisms with a backbone share common ancestry is called…
Homologous Structures
Many different groups of organisms have wings, even though they do not share a recent common ancestor. This is because they evolved in environments with similar selective pressures. Wings are an example of a(n) ______________ structure.
analogous
Structures with no function that are remnants of an organism’s evolutionary past are
vestigial
Genetic variation needed for a population to evolve (what first brings about these adaptations)
mutations
A phenotype that improves an organism’s chance of survival in their environment is considered a(n) ____________.
adaptation
How do populations change due to genetic drift?
A random event occurs that reduces the population, and the new surviving population has a different allele frequency from the original population.
All of these finches have different shaped beaks, they are an adaptation to gain access of
Food
Which species is a common ancestor for species B and D?
K
What organism on this diagram would have DNA most similar to the penguin?
Chicken
