Fetus or baby?: Average length for a 13- week fetus is 7.4 cm, about the length of a pea pod. Average recumbent length for a 13-week male infant is 61 cm., for a female infant, 59.5 cm.If you are interested in fetal growth ; development, http://www.Babycenter.Com has a very helpful app.
Answered 1/4/2020
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