A. sexuality		___ the cell wall
B. puberty		___ twins that develop from one fertilized egg
C. reproductive system		___ where all the information is stored about the new life - the "command center"
D. fertility		___ the body system whose purpose is to create new life
E. membrane		___ what a new human life is called after conception
F. chromosomes		___ responsible for starting the reproductive system
G. implantation		___ the ability to create new life
H. embryo		___ the information in each cell
I. genes		___ when the uterus contracts and relaxes to push the baby out
J. nucleus		___ these decide your hair colour, size, height, etc.
K. zygote		___ when your reproductive system starts to work
L. DNA		___ when the cell sticks to the wall of the uterus
M. conception		___ when the sperm and ovum unite (go together)
N. fraternal twins		___ being male or female
O. identical twins		___ what a new human life is called after it implants into the wall of the uterus
P. labour		___ a bundle of DNA, each cell as 23 pairs of these
Q. pituitary gland		___ twins that develop from two fertilized eggs