Evidence for Evolution
Comparative Anatomy
Vocabulary
Natural Selection
Population Evolution
100
During the period of the Industrial Revolution, pollution caused the forests to darken. Over a short period of time, variations of the peppered moth populations either decreased or increased depending if they were able to adapt. This is ____ evidence for evolution.
What are observable events?
100
Structures that are reduced in form and function are known as __
What are vestigial structures?
100
Cumulative changes in groups of organisms over time.
What is evolution?
100
What is competition?
100
A characteristic that improves an individual's ability to survive and reproduce in a particular environment.
What is an adaptation?
200
Evidence for evolution that links climate and geological forces to explain the ancestral relationships seen in the distribution of organisms around the world.
What is biogeography?
200
Analogous or Homologous?
Anatomically similar structures inherited from a common ancestor.
What are homologous structures?
200
A group of organisms that are closely related and can produce offspring.
What is a species?
200
Population of sea turtle hatchlings over-run an area of the beach.
What is organisms produce more offspring than can survive?
200
Mutations and gene shuffling
What are sources of genetic variations?
300
What is layer I?
What is layer R?
What are I, B, F, and R?
300
Analogous or Homologous?
What are analogous structures?
300
Darwin's description of the mechanism by which evolution occurs as a result of some organisms being better equipped for survival than others.
What is Natural Selection?
300
The naturalist who traveled the world collecting organsims and making observations regarding life on Earth, which he later wrote about in his book On the Origin of Species.
Who is Charles Darwin?
300
The process by which organisms that are better adapted to their environment survive and reproduce more successfully than those less adapted.
What is Natural Selection or Survival of the Fittest?
400
This provides evidence about the order in which species have existed over time and how they have changed over time.
What is a fossil record?
400
Analogous, Homologous or Vestigial?
What are homologous structures?
400
A mathematical conclusion stating evolution does not occur in populations unless natural forces act upon the allele frequencies.
What is the Hardy-Weinberg Principle?
400
This cladogram shows the phylogeny of several species of finches Darwin saw on the Galapagos Islands. This is connected to Natural Selection because it shows ___
What is species descend over time from a common ancestor?
400
Although genetic variations occur within individual organisms, the impact of such changes must be seen in the population in order to determine if nature is selecting for or against a specific trait over time.
What is populations evolve and not individual organisms?
500
This image shows __ evidence for evolution
What is comparative anatomy - embryology?
500
Convergent evolution can occur when unrelated species evolve similar traits while living in different environments, producing ___ structures since they are not from a common ancestor.
What are analogous structures?
500
A measure of the relative contributions that an individual trait makes to the next generation; it can be seen in the number of offpsring produce in each generation.
What is fitness?
500
Data shows that birth weight does contribute to the mortality (death) rate of infant survival. This is is an example of __ selection.
What is stabilizing selection?
500
An increase in the dark variation of the peppered moth made them more fit over time, creating ___ selection.
What is directional selection?