Survival of the Fittest
Types of Adaptation and the meaning for them.
Behavioral (actions) and Physical (appearance)
A giraffe with a longer neck can reach higher leaves and survives better than giraffes with short necks. This shows what process?
Natural Selection
Adaptation can occur because of what?
Genic mutations
A trait that helps an animal or plant blend in with its environment.
Camouflage
A group of organisms that look similar and can mate with each other to repoduce offsprings.
Species
Explains how living things descended from earlier organisms.
Theory of Evolution
Homologous Structures
Natural selection happens over many
Generations
When a species completely dies out.
Extinction
Fossils of ancestors have been found in what?
Rock layers
Examples of Behavioral Adaptions
Migration and Hibernation
A rabbit with brown fur blends into dirt better than a white rabbit. This is an example of this.
Physical (camouflage)
Traits must be this in order to be passed down
Inherited
The variety of living things in an ecosystem or on Earth.
Diversity
A genetic mutation is a permanent change in what?
DNA
Examples of Physical Adaptation
Mimicry and Camouflage
Deer running fast to escape predators is what type of adaptation?
Behavioral
_______+_______=NS
Mutations+ environmental pressure = natural selection
The preserved remains or traces of ancient living things.
Fossils
Less genetic variation could lead to what?
Extinction
4 Environmental Changes
1.Over hunting/ over fishing
2. Loss of habitat
3. Loss of food4. Natural Disaster
The embryo of a chicken and the embryo of a tortoise look very similar while developing. You conclude the chicken and tortoise likely envovled from the same ancestor. Which evidence did you use?
Similarities in development
The scientist who came up with the idea of natural selection.
Charles Darwin
Differences in traits among individuals of the same species caused by differences in genes.
Generic Variation
When the species adaptive skills are not sufficient for it to survive drastic changes in the what?
Environment