Vocabulary 1
different traits within the same species
genetic variation
what are homologous structures
similar structures that species have inherited from a common ancestor
what similarities did he see
similarities between different animals
groups of organisms that share similar characteristics, and individuals within a species are able to interbreed and produce fertile offspring.
What is a species?
Adaptations
special characteristics that help an animal survive
what were the differences based on
the envierment and the activities of the animals
All the possible traits an organism could possess
What is the gene pool?
what are vestigial structures
rudimentary structures in organisms that correspond to a functional structure or organ in ancestral animals
what did he hypothosize
he hypothosized that a small number of different plant and animal species had come to the Galapagoes from the mainland and eventually their offspring became different from their mainland relatives
do individuals evolve
no
what are fossils
physical evidence of an organisms that used to live and died and were preserved
what else did he look at
he also looked at fossils and compared them to the animals living on the island
Increases genetic diversity
What are mutations and natural selection?
what is natural selection
organisms better suited for their environment tend to survive and reproduce more than those who aren’t
who is "he" referring to
Charles Darwin