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Questions and Answers
Which type of development is characteristic of protostomes?
Which type of development is characteristic of protostomes?
- Determinate development (correct)
- Random development
- Indeterminate development
- Limited development
What type of development is associated with deuterostomes?
What type of development is associated with deuterostomes?
- Stochastic development
- Determinant development
- Random development
- Indeterminate development (correct)
In protostomes, what has already been determined for each cell in the adult organism?
In protostomes, what has already been determined for each cell in the adult organism?
- Development fate (correct)
- Shape and size
- Cell division rate
- Genetic code
What is a characteristic of the cells of the eight-cell embryo in deuterostomes?
What is a characteristic of the cells of the eight-cell embryo in deuterostomes?
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Study Notes
Developmental Characteristics
- Protostomes are characterized by Spiral cleavage, a type of development where the cells of the embryo divide in a spiral pattern.
- Deuterostomes, on the other hand, are associated with Radial cleavage, a type of development where the cells of the embryo divide in a radial pattern.
Cell Determination
- In protostomes, the fate of each cell in the adult organism has already been determined.
- In contrast, the cells of the eight-cell embryo in deuterostomes are totipotent, meaning each cell has the ability to give rise to any cell type in the adult organism.
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