Evidence of Revolution
Terms in this set (45)
remains/traces of organism that lived during past eras of earth's history
most fossils are found in __________ rock
imprint, petrification, mold, freezing
the footprints of dinosaurs are an example of a type of fossil called an _________. The replacement of the bones of a skeleton by minerals is an example of __________. The formation of rock around a dead organism may produce a fossil record called a _________. Soft body parts may be preserved for long periods of time by ______.
scientists who study fossils are called ___________.
homologous body structure
looks and functions differently but, come from the same part of the embryo.
similarities in embryo development
vertebrates share a common ancestor, as shown by how these organisms develop
intermediate forms show that organisms have evolved over time
geographic distribution of living species
species have adapted over time to local conditions
example of homologous body structures
capable of themselves to reproduce
a. animals are seperated into 2 groups and must now live apart
b. environments on either side of the river change with time.
c. animals of the same species living on either side of a stream can move from one side to the other.
d. stream changes to river
e. animals, due to natural selection, undergo change
f. after thousands of years, 2 different species of animals form
what organisms did Darwin study that show a similar pattern for new species formation?
vestigial structure, appendix
body parts that no longer have function. ex: ______
organism in early stage of development
who observed variations in the characteristics of animals and plants on the different islands of the Galapagos?
in addition to observing living organisms, darwin studied the preserved remains of ancient organisms, called...
acquired characteristics can be inherited
which of the following ideas proposed by Lamarck was later found to be incorrect?
differences among individuals of a species are referred to as...
which would an animal breeder use to produce cows that give more milk?
inherited characteristic that improves an organism's ability to survive and reproduce in a particular environment
descent with modification
concept that each living species has descended, with changes, from other species over time is referred to as...
fitness is a result of...
Structures in different species that are similar because of common ancestry.
economist who reasoned that if the human population continued to grow unchecked, eventually there would not be enough resources was...
lamarck stated that by selective use/disuse of organs, organisms acquired/lost certain traits during lifetime
explain lamarck's principle of use and disuse.
process by which nature provides variation and humans select useful variation
what is artificial selection? how did this concept influence Darwin's thinking?
fossils found in different rock layers show how old the fossils are
what does fossil evidence show about evolution?
body parts that no longer have function, appendix
what is a vestigial organ?example?
which scientist formulated the theory of evolution through natural selection?
the ability of an individual to survive and reproduce in its specific environment
french scientist jean-baptiste lamarck proposed which of the following theories?
I. all organisms have a common ancestor
II. species change over time
III. single organism can acquire traits over its lifetime that are then passes to its offspring
which of the following is an important concept in Darwin's theory of evolution by natural selection?
I. struggle for existence
II. survival of the fittest
III. descent with modification
natural variation within species
which of the following does not provide evidence that living things have been evolving for millions of years?
a. fossil record
b. natural variation with species
c. geographical distribution of living things
d. homologous structures of living organisms
e. similarities in embryological development
selective breeding of domesticated plants and animals to produce offspring with desired genetic traits
surface of earth changes over time
Lyell's principles of geology influenced Darwin because it explained how...
dogs front legs
a bird's wings are homologous to a...
changes in genetic information from one thing to another
living things overproduce, variation among offspring, struggle to survive, natural selection takes place
charles darwin's main ideas...(4)
cell structure, DNA
all life forms show evidence of _________ and ___
structures that do not have a common evolutionary origin but are similar in function
large-scale evolutionary changes that take place over long periods of time
The theory that natural selection can, over time, take an organism and transform it into a more specialized species of that organism
process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest
the process by which unrelated species become more similar as they adapt to the same kind of environment
pattern of evolution in which two species become more and more dissimilar