During gastrulation the dorsal lip of blastopore (1 external sign of gastrulation) appears
During gastrulation the dorsal lip of blastopore (1 external sign of gastrulation) appears
- A
Anteriorly in the pigmented area of egg
- B
Posteriorly in the yolky cytoplasmic area
- C
In the centre of the egg
- D
Behind the grey crescent area
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When centrolecithal egg of the insects divides regularly then what will happen
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Testicular degeneration and other disorders of reproductive system in mammals are due to the deficiency of
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The type of placenta found in human beings is of type
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Assertion : Old age is not an illness. It is a continuation of life with decreasing capacity for adaptation.
Reason : Cessation of mitosis is a normal genetically programmed event.
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Reason : Cessation of mitosis is a normal genetically programmed event.
- [AIIMS 2003]
The hormone that prepares and maintains the uterus during pregnancy is secreted by
The hormone that prepares and maintains the uterus during pregnancy is secreted by