Adults in the U.S. are encouraged to get 10% to 35% of their day's calories from protein foods. That's about 46 grams of protein for women, and 56 grams of protein for men. It's not hard to get this amount if you eat two to three servings of protein-rich foods a day, according to the CDC. A small 3-ounce piece of meat has about 21 grams of protein. A typical 8-ounce piece of meat could have over 50 grams of protein.
The final and longest stage of prenatal development, the period of the fetus, extends from the beginning of the ninth week to birth (about seven months). The major organ systems continue to develop in size and function throughout this period and the fetus' size is multiplied by a factor of ten.
This stage of prenatal development lasts the longest and is marked by amazing change and growth. During the third month of gestation, the sex organs begin to differentiate and by the end of the month all parts of the body will be formed. At this point, the fetus weight around three ounces. Fetal Stage Germinal Stage The germinal stage is the prenatal, developmental stage that begins at conception and lasts through the second week of pregnancy. During this time, the fertilized egg (now called a zygote, and consists of a single cell) makes it way down the fallopian tube, and begins to have cell reproduction.