In some cases the blastomere can produce complete embryo the cleavage will be___________?
Correct answer: B. Radial and indeterminate
- A. Spiral and determinate
- B. Radial and indeterminate
- C. Spiral and indeterminate
- D. Radial and determinate
Explanation
When a blastomere can develop into a complete embryo, the cleavage is indeterminate because early cells retain the ability to form the whole organism. Radial cleavage is commonly associated with indeterminate development, whereas students may choose spiral and indeterminate by remembering only that some spiral-cleaving animals also show developmental flexibility.
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About Concept of Evolution
Evolution is the heritable change in populations over generations, driven by mutation, recombination, natural selection, genetic drift and reproductive isolation. Questions examine variation, adaptation, survival and reproduction, speciation, fossil and anatomical evidence, and the difference between individual acclimatization and evolutionary change in a population.
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