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Question #45397
The Question
A female patient, unable to produce viable ova but capable of providing a suitable environment for fertilization and gestation, undergoes Gamete Intrafallopian Transfer (GIFT). Following a full-term pregnancy, she delivers a healthy baby and initiates breastfeeding. Which of the following statements regarding her reproductive endocrinology and the neonate's immune maturation is INCORRECT?
Options
- A.
Fertilization occurred in vivo within her fallopian tube, and the resulting placenta facilitated the transfer of maternal IgG to the fetus.
- B.
The sudden withdrawal of progesterone following the expulsion of the placenta removed the inhibitory effect on prolactin, triggering lactogenesis.
- C.
The colostrum secreted during the initial days of lactation provides the neonate with naturally acquired active immunity, primarily mediated by IgA.
- D.
The neuroendocrine reflex responsible for the ejection of colostrum relies on oxytocin, which is synthesized in the maternal hypothalamus.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Regulatory_Failure
Understand how NOT, EXCEPT, and logical constraints are used to manipulate exam results.
Concepts Behind This Question
Colostrum|Mature_Milk|GIFT|Immune_Tolerance
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Distinguishing between active and passive immunity in the context of maternal-fetal transfer.
The trap relies on 'Word-Play' and 'Functional Confusion'.
Students often focus heavily on the ART aspect (GIFT) and correctly identifying the antibody (IgA), causing them to gloss over the critical word 'active' instead of 'passive'.
Furthermore, it tests the integration of Reproductive Health (GIFT), Human Reproduction (Lactation), and Human Health and Disease (Immunity types).
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Human Reproduction - Class 12 |
| Concept | Colostrum vs. Mature Milk |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |