In determinate cleavage, the spindle is
Vertical
Horizontal
Sub-equatorial
Oblique
The animals in which complete embryo develops in the mother's body through placenta are
Which of the following is not evident that the pattern of cleavage is determined by factors in the egg cytoplasm rather than by genes of zygote
In vertebrates the nails are formed from
The size of the egg chiefly depends upon the
If the nuclei from an $8$-celled stage of an embryo are transplanted into enucleated eggs, which of the following events is likely to occur