Humans have a total of 46 chromosomes. How many of these are pairs of autosomes (non-sex chromosomes)?
Show answer & explanation
Correct answer: B
Explanation
Correct Answer:
22
Explanation:
A normal human cell contains a total of 46 chromosomes, arranged in 23 pairs. Out of these, 22 pairs (totaling 44 individual chromosomes) are autosomes (non-sex chromosomes), which govern general bodily traits, physical development, and non-sexual characteristics. The remaining 1 pair (the 23rd pair) consists of the sex chromosomes (XX in females, XY in males), which determine biological sex.
Additional Points:
Human karyotype analysis divides chromosomes neatly into somatic autosomes and sex-determining allosomes.
Important Questions and Answers:
Question: How many pairs of sex chromosomes are present in humans?
Answer: 1 pair (2 individual chromosomes).
Question: Which sex chromosome pair is found in normal human males?
Answer: XY chromosomes.