Which combination of sex chromosomes is typical for human females?

Enhance your knowledge of cell division for the Alberta Biology 30 exam with multiple-choice questions and detailed explanations. Prepare confidently for your test!

Multiple Choice

Which combination of sex chromosomes is typical for human females?

Explanation:
In humans, sex is determined by the presence of X and Y chromosomes. The typical female chromosome set is two X chromosomes (XX). The Y chromosome carries genes (like SRY) that direct male development, so having a Y leads to male development. A YY configuration isn’t viable in humans, and an XO pattern occurs in Turner syndrome—individuals are female but not the typical chromosomal pattern. Therefore, XX is the standard for human females.

In humans, sex is determined by the presence of X and Y chromosomes. The typical female chromosome set is two X chromosomes (XX). The Y chromosome carries genes (like SRY) that direct male development, so having a Y leads to male development. A YY configuration isn’t viable in humans, and an XO pattern occurs in Turner syndrome—individuals are female but not the typical chromosomal pattern. Therefore, XX is the standard for human females.

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