Which sex chromosomes are found in females?

Females typically have two X chromosomes, denoted as XX. This chromosomal configuration is critical for the development of female sexual characteristics and plays a significant role in the determination of biological sex in humans and many other organisms. Each parent contributes one X chromosome to the offspring, and this combination determines the female sex.

In the context of genetics, the X chromosome carries various genes that are important for growth, development, and overall health. The presence of two X chromosomes also has implications in terms of genetic disorders, as females may carry recessive alleles on one X chromosome that may not express if a dominant allele is present on the other X chromosome.

Thus, the presence of two X chromosomes is essential for defining the female sex in the context of chromosomal sex determination.