Which chromosomes are present in males?

In humans, males typically have one X chromosome and one Y chromosome, which together define the male sex in terms of chromosomal composition. The presence of the Y chromosome is crucial; it carries the SRY gene, which is essential for triggering male sex determination and the development of male reproductive anatomy.

While females have two X chromosomes, males have this combination of X and Y, leading to significant differences in various genetic traits, including those associated with sex-linked traits. Autosomes refer to non-sex chromosomes and are present in both males and females, but they do not specifically define male chromosomal makeup.

The other options describing two X chromosomes or two Y chromosomes do not align with typical male genetics, as a male cannot have two Y chromosomes and females cannot have a Y chromosome. Thus, the correct answer reflects the unique chromosomal arrangement that occurs in typical male biology.