What term is used to indicate a characteristic that is shared and inherited from a common ancestor?

a. homologous trait
b. analogous trait
c. cladistic trait
d. ancestral trait
e. derived trait


D

Biology & Microbiology

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Which is NOT one of the four extraembryonic

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Cloning vectors generally possess unique restriction sites and dominant selectable markers

Indicate whether the statement is true or false

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Endosperm is found in

A. ferns. B. mosses. C. gymnosperms. D. horsetails. E. angiosperms.

Biology & Microbiology

A researcher discovers a new, single-celled bacterium very similar to Thiomargarita namibiensis. At first he is confused because this organism is quite large compared to other bacteria

He also knows that because of diffusion, most bacterial cells don't exceed 1m in size. What might the researcher notice about the internal structure of his new bacterium? (Select all correct choices.) A. It contains several membrane-bound organelles, facilitating the diffusion of molecules. B. It contains several large histones, facilitating the diffusion of molecules. C. It is completely filled by cytoplasm, limiting the distance molecules need to diffuse. D. It contains a large vacuole, limiting the distance molecules need to diffuse.

Biology & Microbiology