In a human karyotype, there are 22 pairs of autosomes and 1 pair of which type of chromosomes?

• A. Sex chromosomes
• B. Centromeric chromosomes
• C. Telomeric chromosomes
• D. Mitochondrial chromosomes

Answer: (A)

Verified step by step guidance

1. Recall that a human karyotype consists of 23 pairs of chromosomes in total.
2. Understand that 22 of these pairs are autosomes, which are chromosomes that do not determine sex.
3. Identify the remaining 1 pair as the chromosomes responsible for determining the biological sex of an individual.
4. Recognize that these chromosomes are called sex chromosomes, typically labeled as X and Y in humans.
5. Note that centromeric and telomeric refer to chromosome regions, and mitochondrial chromosomes are found in mitochondria, not in the karyotype.