how is the sex of a person determined

Answer 1

The sex of a person is determined by the presence or absence of certain chromosomes. Most people are born with either two X chromosomes (XX) or one X and one Y chromosome (XY). In general, individuals with XX chromosomes are biologically female, while those with XY chromosomes are biologically male. This genetic information is typically determined at the moment of conception, when a sperm cell carrying either an X or Y chromosome fertilizes an egg cell carrying an X chromosome.

While chromosomes play a crucial role in determining a person's sex, it's important to note that there are also individuals who may have variations in their genetic sex characteristics, such as those with intersex conditions. These individuals may have a combination of both male and female physical characteristics, or may have chromosomes that do not fit the typical XX or XY pattern. Ultimately, sex is a complex and multifaceted trait that is influenced by a combination of genetic, hormonal, and environmental factors.