Answer the following question given this paragraph: 

The ostrich egg - unfertilized, of course. Yes, this egg, just like a human ovum, is just one cell. The egg shell membrane encloses the nucleus containing the genetic material and the cytoplasm.


Q: What part of an egg contains the genetic material ?

 Choices:

- the sperm

- the fetus

- here.the nucleus

- the nucleus

A:
the nucleus
