answersLogoWhite

0

Kidneys begin to form in a developing baby during the embryonic stage, specifically around the 5th week of gestation. The process of kidney development continues throughout pregnancy, with the kidneys becoming functional by around the 10th to 12th week. By the end of the first trimester, the kidneys are fully formed, although they continue to mature and refine their function throughout gestation.

User Avatar

AnswerBot

3w ago

What else can I help you with?