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analogous |
being related or showing a close similarity |
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embryo |
the beginning or developing stage of an organism |
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embryology |
form and structure of an embryo or any of its parts |
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homologous |
having a similarity attributable to a common ancestor |
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lineage |
continuous line of descent |
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macroevolution |
evolution above the species level |
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microevolution |
evolution at or below the species level |
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morphology |
form and structure of an organism or any of its parts |
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speciation |
the splitting of a lineage into separate and distinct species |
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species |
group of related organisms that share features and characteristics |
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vestigial |
small or underdeveloped |
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Which of the following is an example of microevolution? A caterpillar changes form into a butterfly. A population of birds with red feathers slowly changes to having blue feathers. A dinosaur species evolves over time into a bird species. A black cat has kittens with white spots. |
A population of birds with red feathers slowly changes to having blue feathers. |
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Over time, a tadpole changes into a frog. Has it evolved? No, because its genes are still the same. No, because its body did not change enough. Yes, because its structural form changed over time. Yes, because its genes have changed |
No, because its genes are still the same. |
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Evolution _____. doesn’t happen below the species level is always caused by mutation is a slow, gradual change over time happens very quickly |
is a slow, gradual change over time |
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The evolution of the eohippus into the modern day horse is an example of _____. character change stasis extinction metamorphosis |
character change |
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Select all that apply. Macroevolution _____. refers to evolution at the species level includes evolution at the population and community level analyzes the history of life over time refers to evolution above the species level is based on direct observation |
analyzes the history of life over time refers to evolution above the species level |
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Which of the following animals will have a forelimb most similar to a dolphin? shark eagle human lizard |
human |
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Both bats and honeybees have wings. Which of the following statements is true? Bats are more closely related to honeybees than to humans. Since they are the result of evolution, honeybee wings and bat wings are homologous structures. Since they do not come from a common ancestor, honeybee wings and bat wings are analogous structures. Since they both have wings and humans do not, neither bats nor honeybees are related to humans at all |
Since they do not come from a common ancestor, honeybee wings and bat wings are analogous structures |
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Comparative morphology _____. compares the embryo development of organisms of different species compares the anatomy of organisms of different species organizes fossils into a timeline of organism evolution analyses the similarities and differences between organisms of the same species |
compares the anatomy of organisms of different species |
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During the early stages of embryo development, dolphins have gill pouches. What does this mean? Dolphins evolved from fish. Fish evolved from dolphins. Dolphin embryos go through a fish phase during development. Dolphins and fish share a distant, common ancestor. |
Dolphins and fish share a distant, common ancestor. |
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Whales have vestigial legs. This suggests they _____. will one day return to land evolved from large fish descended from land animals can live on land |
descended from land animals |
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Select all that apply. Fossils _____. form whenever an organism dies can show evolutionary relationships between organisms suggest modern day organisms evolved over time can be grouped together by age to form a fossil record |
can show evolutionary relationships between organisms suggest modern day organisms evolved over time can be grouped together by age to form a fossil record |
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Which of the following statements is true? Organisms that evolve in the same environment often have homologous structures. Since there are gaps in the fossil record, it cannot be used as evidence for evolution. Human morphology and embryo development is very different from all other organisms. The more similar the embryonic development of two species, the more closely they are related. |
The more similar the embryonic development of two species, the more closely they are related. |
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