Psychology 2301 Exam 1 Related

Review Psychology 2301 Exam 1 related questions and content

Normal human cells have ________

  • A. twenty-two chromosome pairs and one pair of sex chromosomes.
  • B. twenty-one trisomy chromosome pairs, one autosomal pair, and one pair of sex chromosomes.
  • C. twenty-one chromosome pairs and two trisomy chromosome pairs.
  • D. twenty-three chromosome pairs.
Correct Answer: A

Rationale: Normal human cells have twenty-two chromosome pairs and one pair of sex chromosomes. This is the correct answer as it accurately describes the typical chromosome count in human cells. Choice B is incorrect because it mentions 'twenty-one trisomy chromosome pairs,' which is not characteristic of normal cells. Choice C is incorrect as it suggests having 'two trisomy chromosome pairs,' which is abnormal. Choice D is incorrect as it states 'twenty-three chromosome pairs,' which is not the standard count in normal human cells.