THIERRY BERROD, MONA LISA PRODUCTION / SCIENCE PHOTO LIBRARY THIERRY BERROD, MONA LISA PRODUCTION / SCIENCE PHOTO LIBRARY
Male foetal development. Image 1 of 5. Computer artwork of the yet undifferentiated genitalia of a male foetus. The front of the body is at top right. At this stage it looks identical to a female foetus' genitalia (see image P680/0955). The transformation takes place at twelve weeks when the tubercule (bump at centre) develops either into a penis (male) or a clitoris (female). For a full sequence showing the development of male genitalia see images P680/0960 to P680/0964. For a full sequence showing the development of female genitalia see images P680/0955 to P680/0959.
Model release not required. Property release not required.