Darwin and Friends
Natural Selection
Taxonomy
Forces of Change
Life on Earth
Potpourri
Darwin and Friends | Natural Selection | Taxonomy | Forces of Change | Life on Earth | Potpourri |
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According to Malthus, human populations grow a. linearly.
b. slowly.
c. economically.
d. exponentially. d. exponentially Darwin and Friends 200 | What are the four components of natural selection? overproduction variation selection adaptation (survival and reproduction) Natural Selection 200 | What domain contains prokaryotic organisms that live in very salty environments? Archeae Taxonomy 200 | The outermost tail feather of the male barn swallow is longer than that of the female barn swallow. The long tail feather helps the males attract females, but it also requires the males to use extra energy to fly. What force of genetic change does this describe? nonrandom mating or sexual selection Forces of Change 200 | Name the taxons from largest to most specific taxon.
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species Did King Philip come over for great spaghetti? Life on Earth 200 | Frogs, lizards, and birds all have a similar arrangement of bones in their limbs. What are these structures called? homologous structures Potpourri 200 |
What was the major idea that Darwin presented in his book The Origin of Species?
species changed over time by natural selection "descent with modification"
Darwin and Friends 400 | In a lizard population, a mutation occurs that results in a new colored skin allele. What would determine if this allele became more common? whether the new skin color allele increases the survival of lizard in their environment Natural Selection 400 | What is the system of naming called that Linnaeus used? binomial nomenclature Taxonomy 400 | In a mouse population inhabiting a grassland area, what would cause a new coat color allele? a mutation Forces of Change 400 | In comparisons of the evolutionary relationships between four species of birds, which of the following would be most useful?
a. color of feathers
b. nesting behaviors
c. gene sequences
d. patterns of migration c. gene sequences
Life on Earth 400 | Homologous structures most likely indicate that organisms have a _________ ___________. common ancestor Potpourri 400 |
The hypothesis that evolution occurs at a slow, gradual pace is known as _____________. gradualism Darwin and Friends 600 | Starting in 1954, commercial fishers in the northwest Pacific were paid by weight, rather than by the individual fish, for pink salmon. The fishers increased the use of a type of net that selectively catches larger fish. What happened to the size of the fish? What type of natural selection is this? smaller average body size Directional selection Natural Selection 600 | What is the common ancestor of all the bears on this cladogram? Ursavus elmensis Taxonomy 600 | The change of allele frequency due to migration into and out of a population is called __________________ . gene flow Forces of Change 600 | When a species no longer produces any more descendants, it is considered ________________ . extinct Life on Earth 600 | The marine iguanas of the Galápagos Islands feed on seaweed and algae. Marine iguanas have flattened tails while other species of iguanas that live inland on the Galápagos and on the South American mainland have rounded tails. Explain this difference in tail shape. Flattened tails are better for swimming than rounded tails. Potpourri 600 |
Similar structures are present in the embryos of fish, chickens, and rabbits. In fish, these structures develop into gills, but in chickens and rabbits, they either disappear or develop into other body parts later in embryonic development. These structures in the embryos of all three species show the species all share a ___________ ___________. common ancestor
Darwin and Friends 800 | European rabbits were introduced to Australia in 1859. The rabbits reproduced rapidly in their new habitat, displaced other animals, and overgrazed vegetation. In an attempt to reduce the rabbit population, a virus was introduced in 1951. This virus is usually deadly to European rabbits. When the virus was first introduced, the rabbits died in large numbers, but the death rate decreased over time. Explain why the death rate decreased. Natural selection favored rabbits that are resistant to this virus. Natural Selection 800 | Who is the common ancestor of the Asiatic black bear, American black bear and the brown bear? Ursus minimus
Taxonomy 800 | The random change of allele frequency is called ___________________. This increases as population size decreases. genetic drift Forces of Change 800 | Using the half-life of a radioactive isotope to date fossils is called _______________. radiometric dating Life on Earth 800 | An amoeba, an oak tree, a squirrel, and mildew are all classified in the same
domain Potpourri 800 |
How was Lamarck's idea of evolution different from Darwin's idea?
Lamarck thought organisms could inherit traits that they had been aquired (use & disuse), but Darwin believed organisms that had been born with traits that allowed them to be better able to survive and reproduce would pass on traits. Darwin and Friends 1000 | Explain the difference between microevolution and macroevolution. Microevolution is the change in allele frequencies or variations and Macroevolution involves speciation (the formation of new species) Natural Selection 1000 | What distinguishes the organisms in the kingdom Fungi from other eukaryotic organisms? Fungi are heterotrophic organisms that obtain nutrients by absorption. Taxonomy 1000 | On island chains like the one shown below, animal populations that spread from the main island to the other islands can evolve into separate species. What is this process called?
the founder effect or reproductive isolation - The physical separation of the islands limits gene flow and interbreeding between the populations.
Forces of Change 1000 | Chloroplasts are thought to be the result of an invasion of large prokaryotic cells by _______________________. small photosynthetic prokaryotes Life on Earth 1000 | What is the type of natural selection called where the median variation is eliminated or decreased? disruptive selection
Potpourri 1000 |
If mice have colonized a patch habitat with an intermediate color, what type of natural selection will occur?
stabilizing selection
Natural Selection
What in Earth's oceans most likely provided the energy to make the compounds necessary for life?
Heat from Hydrothermal Vents
Origin of Life
Darwin and Friends |
200 |
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According to Malthus, human populations grow a. linearly.
b. slowly.
c. economically.
d. exponentially. |
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Answer |