ASIS International (ASIS) Professional Certified Investigator Practice Exam

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How many total chromosomes are present in human cells?

  1. 21

  2. 23

  3. 46

  4. 30

The correct answer is: 46

Human cells typically contain a total of 46 chromosomes, organized into 23 pairs. This includes 22 pairs of autosomes and one pair of sex chromosomes, which determine an individual's sex. Each parent contributes one chromosome to each pair, making the total 46. This chromosomal count is foundational to human biology, as it dictates inheritance, genetic variation, and cellular functions. Understanding the number of chromosomes is crucial for fields such as genetics, medicine, and forensic science, where chromosome counting can indicate abnormalities or genetic conditions.

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