The initial process during male sex differentiation towards testis formation is testicular cord formation, taking place during embryonic development. Although the gross morphological events resulting ...

CHICAGO --- The sex of newborns is dictated by the X and Y chromosomes – girls are XX whereas boys are XY. However, new research from Northwestern University has shown that normal testis formation ...

DALLAS – Nov. 20, 2003 – Researchers at UT Southwestern Medical Center at Dallas have shown that insulin family signaling is important for male sex determination, a discovery that furthers the ...

A study reports that a single nucleotide variant in the genome can make an XY individual develop as female and an XX individual develop as male. A tiny DNA change in a non-coding regulatory region can ...