Identical and non identical twins Crossword

This printable crossword puzzle on the topic of Genetics & DNA has 10 clues. Answers range from 5 to 12 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

identical twins share one of these
A fluid-filled sac that contains and protects a fetus in the womb.
Another word for non identical starting with d.
Human offspring during the period from approximately the second to the eighth week after fertilization.
Another word for dizygotic starting with f.
A more common name for monozyotic.
Another word for identical twins.
Another word for fraternal.
Two children or animals born at the same birth.
A fertilized ovum.