Evolution
________________ is the process by which modern organisms have descended from ancient organisms.
Evolution
Darwin's ship was called the HMS _________
Beagle
The fossil record provides information about species that are ____________________ , or have died out.
Extinct
The process where organisms better adapted to their environment tend to survive and produce more offspring is called:
Natural Selection
A(n) _________________ is a well-tested concept that explains a wide range of observations.
Scientific Theory
What are necessary for evolution to occur?
Mutations
Darwin went on a 5 year voyage, with his most important stop being the ___________ __________
Galapagos Islands
Similarities in the early development of chickens and opossums suggest that these animals share a common _________________.
Ancestors
In the process of natural selection, the organisms that are best suited to their environments are most likely to survive and ________________.
Reproduce
Organisms belonging to the same _________ can usually mate and produce fertile offspring.
An inherited characteristic that improved an organism's chances to survive and reproduce is a(n) _________________.
Adaptation
The most famous of the many organisms that Darwin studied on the Galapogos Islands were the: ________
Finches
If two organisms look very similar during their early stages of development, this is evidence that the organisms
evolved from a common ancestor
________________ is the struggle among living things to get the necessary amount of food, water and shelter.
Competition
A diagram showing how scientists think that different groups of organisms are related
A branching tree
The three factors Darwin identified as affecting Natural Selection are:
Overproduction, Competition, and Variation
What feature did Darwin observe had changed the most among the finches of different islands?
Beaks
The forelimbs of mammals and birds have a remarkably similar bone structure, making them _____________ structures.
Homologous
The type of natural selection that acts on an organism's ability to get the best possible mate
Sexual Selection
A _______________ is a natural process by which something takes place.
Mechanism
Transformation
What process did Darwin think was similar to his theory of natural selection, but involved human choices in desired traits?
Artifical selection
Proteins can be used to determine how closely related organisms are because amino acid sequences are determined by the _______ that makes up an organism's genes.
DNA
What mutation turned out to be a helpful adaptation for the peppered moths during the industrial revolution?
Dark/black colored wings
Small changes in DNA that turn genes on or off but do not change the genetic code itself are called?
Epigenetic Changes