1. Multiple Pregnancies two or more babies develop two or more babies develop

2. Identical vs Fraternal

3. Identical Twins develop from 1 fertilized ovum and have the SAME genetic makeup develop from 1 fertilized ovum and have the SAME genetic makeup Fraternal Twins Develop from 2 ova and have DIFFERENT genetic makeup

4. RISKS??? What are the risks to a child who is part of a multiple pregnancy? What are the risks to a child who is part of a multiple pregnancy? -Premature birth -Twin-to-Twin Transfusion Syndrome (TTTS) (sharing a placenta) -Monoamnionic Monochorionic (Mo-Mo) Twins ( sharing an amniotic sac)

5. Conjoined Twins Ovum does not completely split Ovum does not completely split may share internal organs may share internal organs

6. Question… Consider the effects of having a twin. What are the emotional, social, and physical advantages and disadvantages of twins? Consider the effects of having a twin. What are the emotional, social, and physical advantages and disadvantages of twins? What are some of the effects on parents? What are some of the effects on parents?

7. Question… We talked about how expensive it was to afford one child… think of the cost of TWO ! We talked about how expensive it was to afford one child… think of the cost of TWO !