Which sex chromosome sets are present in normal human females?
- A. XX
- B. XO
- C. XY
- D. YY
Answer: A. XX
The nuclei of human cells contain 23 pairs of chromosomes (46 chromosomes). Out of them 44 autosomes and two sex chromosomes. In females, the sex chromosomes are the two X chromosomes. Males have one X chromosome and one Y chromosome.