Chapter 30, Problem 13WIO

Summary Introduction

To determine:

The source from where the mother obtains her atoms that make up the ever-increasing mass of the developing infant.

Introduction:

The development of sexually reproducing animal starts with the zygote. The first cell starts to divide just after the completion of the fertilization. The cells divide and die in a coordinated way as the embryonic animal grows. This process makes the body’s distinctive form and function in shape.