What is a significant developmental milestone for the fetus at 24 weeks?

At 24 weeks, a significant developmental milestone for the fetus is indeed that the fetus exhibits increased activity and typically weighs around 1 pound 10 ounces. This stage of fetal development is marked by notable growth and movement, which can be felt by the mother. The increased weight indicates that the fetus is developing and maturing in preparation for survival outside the womb.

At this gestational age, while the eyes may have developed enough to open and close, the primary significance of this milestone is less compared to overall activity and growth. Although some aspects of lung development are progressing, the fetus is not yet able to breathe independently. Regular sleep patterns typically become more apparent closer to the third trimester, not at 24 weeks. Therefore, the enhanced activity and weight gain are key indicators of healthy fetal development at this stage.