Our blueprint estimate puts 8–12 of the 200 questions in embryology, about 5% of the paper, spread across both papers. It is our estimate, not a figure published by the RCOG. A moderate share of the paper, and reliably examined.
8–12
of 200
8
in our syllabus map
human_structure
3 other areas
Embryology questions are about timing and derivation: when does a structure form, from which layer, and what happens to the patient if it forms wrongly. The reproductive tract gets the most attention.
The 8 syllabus topics we map to Embryology for Part 1.
Müllerian ducts form the tubes, uterus and upper vagina; Wolffian ducts regress in the female. Anomalies follow from failed fusion or failed resorption, and the septate uterus is the most common anomaly and is associated with pregnancy loss.
Learn the sequence from genetic sex through gonadal sex to phenotypic sex, and what each hormone (anti-Müllerian hormone, testosterone, dihydrotestosterone) does. Conditions such as MRKH syndrome and androgen insensitivity are tested by contrasting their karyotype, anatomy and gonads.
Oocytes are arrested in prophase I from fetal life and resume meiosis at ovulation, while spermatogenesis is continuous. The contrast explains the maternal age effect on aneuploidy.
Organogenesis is the period of greatest sensitivity, so exposure timing matters as much as the agent. Match each structure to the window in which it forms.
Draw a single timeline from fertilisation through the eighth week, and attach each organ system to its window. Learn the genital tract as two duct systems with a fate for each in either sex, then test yourself on what each anomaly looks like at examination. Spend your last session on the karyotype and gonad combinations, which are tested by contrast.
Part 1 is 200 single best answer questions across two papers with no negative marking, so an informed guess always beats a blank. Embryology links directly to genetics, where chromosomal and single-gene disorders are tested, and to pathology of the tract. A timeline drawn once and reviewed often is the most efficient revision tool here.
Every question is original and written from published RCOG and NICE guidance, and every explanation cites the guideline it came from. Free: 5 days full access, then 50 questions. No card.
Published RCOG and NICE guidance summarised for revision, with the source cited on every page.
MRCOG AI is an independent educational tool. It is not affiliated with, endorsed by, or connected to the Royal College of Obstetricians and Gynaecologists (RCOG).