The book, "SBAs for MRCOG-I" is intended for the doctors who are planning to appear in MRCOG part 1 examination. The MRCOG two-part examination is meant for those doctors (undergraduates as well as postgraduates) who wish to pursue their specialisation in obstetrics and gynaecology in the UK. This book is a compilation of nearly 500 SBAs commonly asked in the part 1 MRCOG written examination, which would help in the evaluation of basic and clinical sciences relevant to the subject of obstetrics and gynaecology. Fundamental aspects of all the important subjects related to basic sciences in medicine inclusive of subjects such as anatomy, physiology, biochemistry and nutrition, pathology, microbiology and immunology, embryology, genetics, biophysics, epidemiology, endocrinology, pharmacology, and obstetrics and gynaecology have been covered. The questions have been covered in accordance with the latest curriculum and examination format as described by the RCOG. Two model test papers comprising of 100 SBAs each would help candidates to estimate their knowledge through self-evaluation.