Asked by Carina Darosa on Jun 09, 2024
Verified
What evidence supports the idea that some nuclei are totipotent?
A) Nuclei taken from the cells of an embryonic frog can direct a frog egg to develop into a tadpole.
B) Nuclei taken from the cells of a frog embryo can direct any amphibian 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.
Totipotent
Cells that have the potential to develop into any cell type in an organism, including embryonic and extraembryonic tissues.
Nuclei
Nuclei are the centralized organelles found in eukaryotic cells, containing most of the cell's genetic material (DNA).
Tadpole
The larval stage of amphibians, particularly frogs and toads, characterized by a tail for swimming and gills for breathing.
- Clarify the critical role that totipotency plays in developmental biology and cloning techniques.
- Comprehend the idea of nuclear equivalence and its significance in developmental biology.
Verified Answer
SR
Salma RamirezJun 15, 2024
Final Answer :
A
Explanation :
Nuclei taken from the cells of an embryonic frog have been shown to direct a frog egg to develop into a tadpole, demonstrating that these nuclei retain the full genetic information necessary to guide the development of a complete organism, thus indicating totipotency.
Learning Objectives
- Clarify the critical role that totipotency plays in developmental biology and cloning techniques.
- Comprehend the idea of nuclear equivalence and its significance in developmental biology.