In most cases, the female is XX and the male is XY. Every individual must have at least one X chromosome. Since the female is XX, each of her eggs has a single X chromosome. The male, being XY, can generate two types of sperm: half bear the X chromosome, half the Y.
However, it's important to note that there are exceptions and complexities when it comes to sex determination. For example:
- Intersex individuals may have different chromosome combinations, such as XXY or XYY, leading to variations in their biological sex.
- Congenital Adrenal Hyperplasia (CAH) is a condition that can affect XX individuals, causing them to have male-like characteristics.
- Gender identity is separate from biological sex and can be influenced by a variety of factors, including hormones, genetics, and personal experiences.
Ultimately, determining an individual's gender is a complex process that involves understanding biological, social, and personal factors. It's crucial to approach this topic with sensitivity and respect for the diversity of human experiences.