2
QuizMultiple Choice

Cell Cycle — Unit test

Question 2 • IL-Science 7 A

An organism has 18 chromosomes in its body cells. Its sex cells have 9 chromosomes.Which statement correctly explains this?

Answer
A
Its body cells are haploid and a result of mitosis.
B
Its sex cells are diploid and a result of mitosis.
C
Its sex cells are haploid and a result of meiosis.
D
Its body cells are diploid and a result of meiosis.

Explanation

Body cells have 18 chromosomes, so they are diploid (2n). Sex cells have half that number, 9, making them haploid (n). Meiosis reduces the chromosome number by half to produce haploid sex cells, so the correct statement is “Its sex cells are haploid and a result of meiosis.”

AI-written and checked against the verified answer.

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