A new organism from Mars has been discovered, and its genome has n=12. Although these...
BIOLOGY
SAT 2021
A new organism from Mars has been discovered, and its genome has n=12. Although these organisms are fluorescent green, their cells undergo meiosis and mitosis in the exact same way that human cells do. After one of these cells undergoes meiosis, how many chromosomes will it have?
- A. 12
- B. 18
- C. 6
- D. 4
Correct Answer: A. 12
Explanation
A somatic (body) cell is always diploid, meaning that it has 2n chromosomes. When a cell undergoes meiosis, the number of chromosomes in each daughter cell will be half the number in the original parent cell. Each daughter cell produced from meiosis will be haploid, meaning that it will have n chromosomes.
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