Clomifene causes three follicles to develop in one cycle. Three mature eggs are then released.
Which sequence explains an increased chance of a multiple pregnancy?
more eggs can fuse together; more than one embryo may implant
more eggs can be fertilised; more than one embryo may implant
more eggs can fuse together; each embryo must split into twins
more eggs can be fertilised; each embryo must split into twins
48 exam-style questions on Edexcel GCSE Biology 7.2 Reproductive hormones, covering 7.2.1 Stages of the menstrual cycle, 7.2.2 Hormonal control of the menstrual cycle, 7.2.3 Hormonal contraception, 7.2.4 Evaluating contraception methods, and 7.2.5 Hormones in Assisted Reproductive Technology. Each one has a worked solution and a mark scheme showing where the marks go.