This is the mechanism for evolution as proposed by Charles Darwin
Natural Selection
Some organisms that share a common ancestor have features that have different functions, but similar structures. These are known as
Homologous Structures
True/False - Many animals have vestigial structures from an ancestor.
TRUE
A characteristic of different organisms that have similar function but not necessarily the same structure and did not come from the same common ancestor
Analogous Structure
Explain the image
Answers vary - comparative embryology
Selection by humans for breeding of useful traits from the natural variation among different organisms
Artificial Selection
An example of a Homologous molecule
Answers vary: DNA, RNA, Protein, Cytochrome C
A species splits into two or more descendant species, resulting in once similar or related species to become more and more dissimilar.
Divergent Evolution
To understand evolutionary relationships, scientists these days mostly look at _____________.
DNA
True/False - We can observe changes in life forms by observing the fossil record
TRUE
This is a trait that makes an organism more suited to its environment
Adaptation
The process of change in a species over time is called
Evolution
The ability of an organism to survive and reproduce in its environment