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Lesson 4

Lesson 4: Menstrual Cycle, Fertilization, Embryonic Development and Contraception

Lesson parts

4.1 The breeding cycle and the menstrual cycleThe breeding cycle and the menstrual cycle4.1

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4.2 FertilisationFertilisation4.2

4.3 Pregnancy and embryonic developmentPregnancy and embryonic development4.3

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4.4 Contraception (birth control)Contraception (birth control)4.4

4.5 Multiple births and twinsMultiple births and twins4.5

4.6 Test-tube babies (in vitro fertilisation, IVF)Test-tube babies (in vitro fertilisation, IVF)4.6

4.7 Cloning and embryo cultureCloning and embryo culture4.7

4.8 Gamete banks and sex controlGamete banks and sex control4.8

4.9 Ethical noteEthical note4.9

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4.10 Practical observations (as listed at the end of the chapter)Practical observations (as listed at the end of the chapter)4.10

4.11 Summary comparisonsSummary comparisons4.11

4.12 Key termsKey terms4.12