Trophoblast cells begin to display _ selection adhesion molecules on their surface soon after the blastocyst hatching.
Correct answer: C. L selection
- A. X selection
- B. D selection
- C. L selection
- D. C selection
Explanation
Trophoblast cells begin to display adhesion molecules on their surface soon after the blastocyst hatching.
This question appeared on the KMU Centralized Admission Test 2020 paper, which you can sit online with every answer explained.
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About Embryonic Development
Embryonic development begins after fertilization with cleavage and formation of the morula and blastula, followed by gastrulation and the establishment of germ layers. It includes organ formation, tissue differentiation and early growth, rather than the later increase in size associated with postnatal development.
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