The male gender has the Y chromosome only.
Understanding Chromosomes and Gender
Chromosomes are thread-like structures found in the nucleus of every cell in our body. They contain our genetic information, which determines our traits. Humans have 23 pairs of chromosomes, one set inherited from our mother and one from our father.
- Females typically have two X chromosomes (XX).
- Males typically have one X and one Y chromosome (XY).
The Y chromosome is smaller than the X chromosome and contains a gene that triggers the development of male characteristics.
Importance of the Y Chromosome
The Y chromosome plays a crucial role in determining a person's sex. It contains the SRY gene, which initiates the production of the male sex hormone testosterone. This hormone leads to the development of male reproductive organs and secondary sexual characteristics.
Key Takeaways
- Only males have the Y chromosome.
- The Y chromosome contains the SRY gene, which is essential for male development.
