Card Set Information
First semester science Ch 6
changes in inherited characteristics of a species over time
A species is a group of organisms that share similar ________ and can ________ among themselves.
Lamarck's theory of ________ characteristics was not supported by evidence.
Darwin ________ that plants and animals on islands off the coast of South America originally came from Central and South America.
Darwin ________ that species of finches on the islands looked similar to a mainland finch species.
Darwin reasoned that members of a population best able to survive and reproduce will pass their traits to the next generation; over time, differences can result in separate ________.
Darwin's hypothesis became known as the theory of evolution by ________ ________ - organisms with traits best suited to their environment will more likely survive and reproduce.
an inherited trait that makes an individual different from other members of its species
an ________ is a variation that makes an organism better suited to its environment
Many ________ factors can cause changes in the sources of genes.
ENVIRONMENTAL or NATURAL
Geographic ________ can make two populations so different they become different species.
Two models explain the ________ of evolution.
________ describes evolution as a slow, ongoing process.
The ________ ________ model says gene mutation can result in a new species in a relatively short time.