Regarding sexual differentiation of the fetus

A. Gonadal development begins at 5th week of intrauterine life

B. Y chromosome determines the differentiation of ovaries

C. Female external genitalia development is completed by 10 weeks

D. Male sexual differentiation occurs earlier than females

Correct Answer: Gonadal development begins at 5th week of intrauterine life

Description: OptionB: SRY Gene located on Y chromosome encodes Testis Determining Factor which leads to the development of male genital organs Option C&D: Development of external genitalia is similar in males and females till the 6th week of IUL(Indifferent stage)....later develops in the direction of hormones. REFERENCE: TEXTBOOK OF CLINICAL EMBRYOLOGY... VISHRAM SINGH SECOND EDITION..PAGE NO:277

Category: Anatomy

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