The process of biological change by which descendant come to differ from their ancestors.
What is evolution?
100
Swedish botanist who developed a classification system for all types of organisms.
Who is Carolus Linnaeus?
100
Variation
What are differences among individuals resulting from differences in the genetic material of the organisms?
100
Darwin used these to show that organisms change over time.Older ones found at bottom of layers of rock werre more primitive than those in the upper,or newer, layers.
What are fossis?
100
Allele frequencies can change due to chance alone.
What is Genetic drift?
200
Group of organisms so similar to one another that they can reproduce and have fertile offspring.
What is a species?
200
A naturalist who proposed that species shared ancestors instead of arising separately.
Who is Georges Louis Leclerc de Buffon?
200
Overproduction
What is having many offspring to raise the chance that some will survive?
200
The study of the distribution of organisms around the world.
What is biogeography?
200
The movement of alleles from one population to another changes the allele frequencies in each population
What is Gene flow?
300
Theory that states that natural disasters such as floods and volcanic eruptions have happened often and shaped landforms and caused species to become extinct.
What is catastrophism?
300
English doctor and a poet who proposed that all living things were descended from a common ancestor and that more-complex forms of life arose from less complex forms.
Who is Erasmus Darwin?
300
Adaptation
What is a certain variation that allows an individual to survive better than other individuals it conpetes against in its enviroment.
300
The similar features of these in very different organisms suggest evolution from a distant common ancestor.
What are embryos?
300
New alleles can form.
What is mutation?
400
Principles that landforms resulted from slow changes over a long period of time.
What is gradualisn?
400
French naturalist who proposed that all organisms evolved toward perfection and complexity.
who is Jean-Baptiste Lamarck?
400
Descent with modification
What is natural selection resulting in species with adaptations that are well suited for survival and reproduction?
400
It would be unlikely for many species to have similar_____________ if each species evolved independently.
What is anatomy?
400
Certain traits may improve mating success.Alleles for these traits increase in frequency.
What is Sexual selection?
500
Theory that states that the geoligic procsses that shape Earth are uniform through time.
What is uniformitarianism?
500
Scientist who deserves much of the credit for evolutionary theory by natural selection.
who is Charles Darwin?
500
Fitness
What is the measure of the ability to survive and produce more offspring relative to other members of the population in a given environment?
500
Structures that perform a similar function but are not similar in origin.
What are analogous structures?
500
Certain traits may be an advantage for survival.Alleles for these traits increase in frequency.