Embryo sex selection    involves   choosing  the sex  of an embryo before implantation, typically through in vitro fertilization (IVF). It can be achieved    using techniques like   preimplantation    genetic    testing (PGT),    where   embryos   are   screened   for   sex chromosomes.  This  process   helps    ensure    the desired sex of the child, often for medical or  family balancing reasons. Sex selection is legal    in   some countries but highly    regulated   or   prohibited    in others. Ethical concerns   arise   regarding    gender preference    and   potential   societal   impacts. The technology has raised debates on the    implications for gender equality and cultural norms.