Ecological Relationships
This relationship benefits both organisms involved.
Mutualism
This scientist developed the theory of natural selection.
Charles Darwin
Genetic drift is more likely to occur in these types of populations (large or small?).
Small populations
The variety of different species living in an area.
Biodiversity
This is the only mammal capable of true flight.
Bat
In this relationship, one organism benefits while the other is harmed.
Parasitism
Natural selection acts on this level of organization (individual or population?).
Individual
A natural disaster randomly reducing a population is called this effect.
Bottleneck effect
A change in a DNA sequence.
Mutation
Sharks have been around longer than this group of extinct reptiles.
Dinosaurs
When one organism benefits and the other is neither helped nor harmed.
Commensalism
Individuals with traits better suited to the environment are more likely to do this.
Survive and Reproduce
When a small group starts a new population with limited genetic variation.
Founder effect
Different forms of the same gene.
Alleles
This part of a plant cell makes food using sunlight.
Chloroplast
Lions hunting zebras on the African savanna is an example of this relationship.
Predation
Darwin developed many of his ideas after traveling to these islands.
Galápagos Islands
Genetic drift changes allele frequencies due to chance rather than this process.
Natural Selection
The role or job of an organism in its ecosystem.
Ecological Niche
Octopuses have this many hearts.
Three
Two species competing for the same limited resource, like food or territory, show this relationship.
Competition
This term describes traits that increase an organism’s chances of survival.
Adaptation
Genetic drift can reduce this within a population.
Genetic Variation
The process by which populations become better suited to their environment over generations.
Evolution by natural selection
This tiny animal, also known as a “water bear,” can survive extreme heat, freezing temperatures, radiation, and even the vacuum of space.
Tardigrade