2Organisms with a short generation time could be modified more rapidly than those with a long generation time. For example a bacterium with a generation time of one hour would have almost 9 million generations in 1000 years, whereas humans would have about 40 generations in a 1000 years.
4There are many different environments and many different demands on species. A species adapted to one environment might fare poorly in a different environment. Also, different types of organisms are interrelated in complex ways.
6Which of the following is NOT true regarding Natural Selection? It was discovered by Charles Darwin.All members of a population are identical.More individuals are produced then survive.Only the best adapted survive and reproduce.
10List three types of evidence that support the theory of evolution.
11Fossil recordBiogeographyBiochemistry (DNA and amino acids)EmbryologyMorphologyCo-evolutionConvergent EvolutionDivergent Evolution(This will be an essay question on the test but you will also have to describe each of the 3 types of evidence you list.)
12How does DNA act as an index of relatedness between species?
13Species having more-similar DNA are more closely related, or share a more recent common ancestor, then species with less-similar DNA.
14Radioisotopes tell scientists that Earth is how old? 65 million years500 million years4.6 billion years13.4 billion years
16Which step caused an aerobic atmosphere during the history of Earth? Origin of cell membranesAn energetic atmosphereOrigin of anaerobic prokaryotesOrigin of photosynthetic prokaryotes
17Similar structures are present in the embryos of fish, salamanders, turtles, chickens and pigs. In fish these structures develop into gills but in the other organisms, they either disappear or develop into other body parts later in embryonic development. Which of the statements below best explains the presence of these structures in embryos of all five species?The reproductive mechanisms are similar among the adults of the three species.The five species have a common ancestor.The embryos of the five species are similar in sizeBreathing structures are similar among the five species
19It is believed that during the late Cretaceous period sea levels rose drastically resulting in about a third of the Earth’s present land masses being underwater. Which of the following types of evidence supports this theory?Dinosaur and bird fossils found in swamp areasMinerals and oil found in underground depositsCorals and marine fossils found in the Great PlainsVolcanoes and igneous rocks found on the ocean floor
23Growing up, Darwin saw that farm animals with preferred traits were chosen for breeding. Those chosen animals usually produced offspring with the preferred traits. This best illustrates the process ofGenetic engineeringArtificial selectionNatural selectionEvolution
24How does the fossil record help us understand the evolution of life on Earth?
25By studying the age and morphology of fossils we can study how life evolved in the past.
30Why is it useful to study the amino acid sequences or proteins from different species?
31This is useful because DNA codes for amino acids which make up proteins. By sequencing the amino acids or proteins we are can see how different species DNA compare and we can see how closely related they are.
32Explain how a theory is different from a law. Explain how they are similar
33A law tells us what nature does under certain conditions. A theory explains why and how nature works the way it does.They are similar because both are based on large bodies of evidence that have been collected over many years or research
34Put the following in the correct order. The ozone developedLife was restricted to the oceans.The dinosaurs went extinctThe earth stabilizedLife moved on landThe earliest humans appearedPhotosynthetic bacteria evolved.
35The earth stabilizedLife was restricted to the ocean.Photosynthetic bacteria evolved.The ozone developed.Life moved on land.The dinosaurs went extinct.The earliest humans appeared.