Question

What is the total number of chromosomes in humans?

Hint:

Humans have 23 pairs of chromosomes, with one pair determining the sex (XX for females, XY for males).

Answer 1

Step 1: Chromosomes in humans.
Humans have a total of 46 chromosomes, which are arranged in 23 pairs.
Step 2: Karyotype of humans.
One of these 23 pairs is made up of sex chromosomes, and the remaining 22 pairs are autosomes.
Step 3: Conclusion.
Thus, the correct answer is ((B) 23 pairs.
Final Answer: \[ \boxed{23 \, \text{pairs}} \]