Embryonic Development
Mediumbiology
Implantation in humans typically occurs on which day post-fertilization?
Select the correct option:
Solution
Incorrect! Answer:
Day 6-7
- Timeline: Fertilization usually occurs in the ampulla of the fallopian tube.
- Transportation: The zygote travels toward the uterus while undergoing cleavage divisions (2, 4, 8, 16 cells).
- Morula to Blastocyst: By day 4-5, it becomes a blastocyst.
- Implantation: The blastocyst reaches the uterus and adheres to the endometrial wall. This attachment and embedding (implantation) typically occur around Day 6 or 7 after fertilization.
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About This Question
- Subject
- biology
- Chapter
- reproduction
- Topic
- embryonic development
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Day 6-7
- Timeline: Fertilization usually occurs in the ampulla of the fallopian tube.
- Transportation: The zygote travels toward the uterus while undergoing cleavage divisions (2, 4, 8, 16 cells).
- Morula to Blastocyst: By day 4-5, it becomes a blastocyst.
- Implantation: The blastocyst reaches the uterus and adheres to the endometrial wall. This attachment and embedding (implantation) typically occur around Day 6 or 7 after fertilization.
This medium difficulty biology question is from the chapter reproduction, covering the topic of embryonic development. It appeared in the 2025 exam.
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