Which one of the following statements with regard to embryonic development in humans is correct
Cleavage division bring about considerable increase in the mass of protoplasm
In the second cleavage division, one of the two blastomeres usually divides a little sooner than the second
With more cleavage divisions, the resultant blastomeres become larger and larger
Cleavage division results in a hollow ball of cells called morula
The fertilized egg divides by the process of
Explain : When and how the sex of the baby is determined ?
Gastrulation is the process which involves the differentiation of the following layers in a vertebrate embryo
Cleavage is followed by which stage
Cleavage is found in