15, Twins can have different gestational age. When it comes to fraternal twins, fertilization doesn’t always have to happen at the same time. Fraternal twinning is the product of releasing two eggs within the same cycle, and the eggs are not necessarily released on the same day. One egg may be fertilized days (even weeks) before the other, leading to a difference – however slight – in the age and development of the twins.
16, 27 lbs and 12oz is the heaviest combined birth weight of any set of twins. if you think it would be rough to carry around and deliver one 14-pound baby, then imagine doing it with two. That’s just what happened in this case, the largest twin birth on record. Of course, it doesn’t hold a candle to the largest singleton birth weight of 23 pounds.
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