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: The correct answer is A. Normal human cells have twenty-two chromosome pairs and one pair of sex chromosomes. This adds up to a total of 46 chromosomes. Choice B is incorrect as it mentions twenty-one trisomy chromosome pairs, which is not a characteristic of normal human cells. Choice C is also incorrect as it states twenty-one chromosome pairs and two trisomy chromosome pairs, which is not accurate for normal human cells. Choice D is incorrect as it mentions twenty-three chromosome pairs, which is not the correct number for normal human cells.