<p>Name: ______Hour: ______</p><p>In the Womb: Multiples</p><p>1. According to the video, only 1 in ______million pregnancies will result </p><p> in identical quads.</p><p>2. How many million sperm are released by a health male? ______</p><p>3. How long before the egg divides for the first time? ______</p><p>4. What day does the egg attach itself to the uterine wall? ______</p><p>5. If the egg hasn’t split within ______days of conception, it never will.</p><p>6. Can identical twins ever be of opposite sexes? ______</p><p>7. ______twins are twins that come from 2 different eggs and </p><p> sperm.</p><p>8. By day ______nerve cells begin forming.</p><p>9. By day 22 the heart begins ______.</p><p>10. How many times in a lifetime will the heart beat? ______</p><p>11. For every 400 sets of twins, one set will have different ______.</p><p>12. What is the record number of fetuses in one uterus? ______</p><p>13. How many survived that pregnancy? ______</p><p>14. At 9 weeks the fetuses heart beats ______times per minute.</p><p>15. Sometime between weeks 10-14 most women will have their first </p><p>______.</p><p>16. Vanishing Twin Syndrome is when ______.</p><p>17. Scientists believe this happens with one in ______pregnancies.</p><p>18. Scientists think that ______handed people are the surviving </p><p> twin of a vanishing twin pregnancy.</p><p>19. Which sex tends to move first in the womb? ______</p><p>20.Can the fetus taste what the mom eats? ______</p>