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| 1. |
Discuss the development of embryo in human beings |
| Answer» <p>The first three months of embryonic development are known as the first trimester, that is, the first three-month period of growth. At the end of the first trimester, the embryo looks like an adult, with all major organs having been formed. It is about 3 inches (7.5 centimeters) long. Still, an embryo born during this period trimester will not survive. Additional time in the mother's womb is needed to permit further development of the organs.</p><p>At the beginning of the second trimester, the growing organism is no longer called an embryo, but a fetus. Fetal development continues through the second and third trimesters until it is ready for birth at the end of the ninth month.</p> | |