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Week 38: Baby develops a firm grasp. Thirty-eight weeks into your pregnancy, or 36 weeks after conception, your baby is developing a firm grasp. Your baby's toenails have reached the tips of his or her toes. His or her brain might weigh about 14 ounces (400 grams). After birth, your baby's brain will continue to grow.
05-23-2003, 05:25 PM. ON AVERAGE, girls get a growth spurt shortly before the onset of puberty. They will grow some afterwards, too, but not a lot. In comparison, boys GENERALLY grow quite a bit in the years following puberty, which usually occurs later for boys. Look at any classroom of 7th or 8th graders. The girls are mostly larger, taller, and generally more mature in just about every way, whereas most of the boys are still children.