What evidence supports the idea that some nuclei are totipotent?

a. Nuclei taken from the cells of an embryonic frog can direct an egg to develop into a
tadpole.
b. Nuclei taken from the cells of a frog embryo can direct an egg to develop into a tadpole.
c. Nuclei taken from a different species can direct a tadpole egg to develop into a normal
tadpole.
d. Some cells are capable of undergoing unlimited cell cycles.
e. Some cells are capable of arresting their cell cycle at will.


A

Biology & Microbiology

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