Apoptosis Has Been Found to Begin Early on in Development

Multiple Choice

Apoptosis has been found to begin early on in development (i.e.prior to gastrulation) .How would a lack of apoptosis affect the process of development?

A) Neural tube closure would not occur.
B) The epidermis layer would join together.
C) Formation of the blastopore would not occur.
D) Formation of the notochord would not occur.