

Identifying people as simply ‘male’ or ‘female’ has its limitations, as a recent article in Nature magazine which examines how increasingly complicated sex-determination can be highlights.
A typical male has XY chromosomes and a female has XX but not everyone fits so neatly into these categories. Scientists already know that people can have sex chromosomes that don’t match their sexual anatomy but genetics can push the boundaries of sexual identity even further.
A closer look at individual cells can give rise to some astonishing results




























