If 12 mature oocytes are fertilized during an IVF cycle, and 70 % of them develop into 2‑cell embryos by 24 hours, how many 2‑cell embryos are present?
Answer
8 2‑cell embryos
The correct answer is 8 2‑cell embryos — Conclude that 8 embryos have reached the 2‑cell stage after 24 hours.
Step-by-step solution
- Identify the total number of mature oocytes: 12.
- Compute 70 % of 12 by multiplying 12 × 0.70, which equals 8.
- Conclude that 8 embryos have reached the 2‑cell stage after 24 hours.
Common mistake: Using 0.07 instead of 0.70 for 70 %
Concept tested: Percentage of embryos developing
Published · How this solution was prepared and checked
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