In amphibians, at puberty, nuclear membrane of primary oocyte breaks down by the influence of
Rolling of sheet of cells over other cells during gastrulation is called as :
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In a bicoid mutant Drosophila ................... will form ?
The only cell that can give rise to a complete new organism is
Which of the floral whorls is affected in agamous (ag) mutants ?
With respect to development of any organism autonomous specification would result in which type of development?
In Hydra, if any part is lost remaining portion re-patterns itself and gives rise to complete organism. Such a pattern of development is termed as
Which of the following maternal effect genes regulate anterior axis development?
With respect to male reproductive system in humans, find out the correct statements.
In developmental biology, morula is ________cell stage. [Answer in integer]
As mammalian zygotes divide, all cells are totipotent upto the ________________ celled stage. [Answer in integer]
If a sperm cell contains 8 chromosomes, it comes from an animal that has ______________ chromosomes. [Answer in integer]
Primary spermatocyte undergoes 2nd meiotic divisions to produce how many haploid spermatids _______ [Answer in integer]