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19 questions
What is the study of organisms at the early stages of development?
DNA studies
embryology
extinction
fossil record
Structures that are similar in function.
Homologous
Analogous
Vestigial
DNA
What is this an example of?
Homologous structure
Analogous structure
Vestigial organs
Functional adaption
What conclusions can be made based on this table shown?
the American black bear and the giant panda are most closely related
the giant panda and the red panda are most closely related
the red panda and the racoon are the most closely related
the giant panda and the racoon are most closely related
A scientist compares DNA taken from four different living species. Which of the following statements is true?
Species X evolved from Species Y.
Species A and Z share a recent common ancestor.
Species A and Species Y are the same.
Species Y and Species Z can interbreed.
The diagram illustrates an embryonic stage of two organisms. Which of the following can be determined by observing the embryos shown in the diagram?
The organisms belong to the same genus.
The organisms are native to the same geographic areas.
The organisms share a common ancestry.
The organisms will grow into anatomically similar adults.
The bones in the figure above are-
Evidence of a common ancestor
Evidence that animals can walk
Evidence that fossils are old
Evidence of nothing
How can the pattern of change in the fossil record best be explained?
The mollusks were well adapted to their stable environment. A large, sudden change occurred in their environment. After the change the mollusks with the bigger shells were better adapted for the new environment.
The mollusks were well adapted to their stable environment. The mollusks hybridized with a smaller species of mollusk. A new species of mollusk with a bigger shell resulted.
The mollusks were not well adapted to their environment. The length of the mollusks' shells changed gradually over time. The mollusks in the original population that had small shells died over a period of many years.
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