A phenomenon of embryonic induction was first described in amphibia by
Aristotle
Spemann
Von Baer
Spallanzani
The rolling of endodermal and mesodermal cells from the surface of embryo into its interior is called
In which of the following animal cleavage divisions are restricted to a small part of cytoplasm & nucleus in animal pole of egg
Which of the following is the endocrine tissue of testes
The layer of uterus which becomes much eroded due to placental villi is known as
How many chromosome numbers are present in primary spermatocytes of human ?