Which of the following is the correct sequence of missing events in the diagram given below:
Correct answer: C. Fertilization -> Cleavage -> Gastrulation -> Organogenesis
- A. Cleavage -> Fertilization -> Organogenesis -> Gastrulation
- B. Organogenesis -> Gastrulation -> Fertilization -> Cleavage
- C. Fertilization -> Cleavage -> Gastrulation -> Organogenesis
- D. Gastrulation -> Fertilization -> Organogenesis -> Cleavage
Explanation
After gamete formation, the first process that occurs is fertilization, which means the fusion of gametes to form a zygote. Then this zygote divides which is termed as cleavage, then after that and before organogenesis, we have the gastrula stage. Hence option C is correct.
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