Question

Which of the following accurately describes a typical human karyotype? A. A karyotype only displays sex chromosomes. B. 1 pair of sex chromosomes and 22 pairs of autosomal chromosomes are pictured. C. 1 sex chromosome and 11 autosomal chromosomes are pictured. D. A karyotype displays all of an individual’s RNA.

Answer 1

The normal human karyotypes contain 22 pairs of autosomal chromosomes and one pair of sex chromosomes.

Therefore the best answer choice is:

B. 1 pair of sex chromosomes and 22 pairs of autosomal chromosomes are pictured.

A karyotype is an organized profile of a person's chromosomes. Two chromosomes specify sex, XX for female and XY for male. The rest are arranged in pairs, numbered 1 through 22, from largest to smallest.