The following criteria is to be answered using the correct terminology when explaining the following structures and processes.• Summarise the journey taken by the gametes to achieve fertilisation.• Explain what is meant by the terms fertilisation and implantation with reference to structure of formed cell/cells.• Describe the early stages of a developing embryo• Explain the role of the placenta during pregnancy.• Compare and contrast the role of the hormones during birth and lactation.
