MCQ
The concept that organizer is essential for embryonic development was given by:
- AJ. Axelrod
- BK. Landsteiner
- CH. Spemann
- DI. P. Pavlov
Explanation:
The Spemann - Mangold organizer is the Spemann organizer, which describes the cluster of cells in the developing embryo of an amphibian, that induces development of the central nervous system.
The discovery of the Spemann - Mangold organizer introduced the concept of induction in embryonic development.
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Reason : Copper $-T$ prevents passage of sperms from vagina upwards into fallopian tubes.