Respuesta :
the correct answer is hollow ball of cells formed after a fertilized cell undergoes cell division.
It is found in the earliest development of mammals and an embryo forms out of it.
The definition of blastocyst
mammalian blastula in which some differentiation of cells has occurred.
It is found in the earliest development of mammals and an embryo forms out of it.
The definition of blastocyst
mammalian blastula in which some differentiation of cells has occurred.