Sperm cells can survive inside a woman's reproductive organs for up to 444 days. An egg cell can survive for 222 days after ovulation has occurred.
In a particular woman, ovulation occurred on day 151515 of her menstrual cycle.
Calculate the range of days of her cycle during which sexual intercourse could result in fertilisation.
Give your answer in the form: From day A\text{A}A to day B\text{B}B
62 exam-style questions on AQA GCSE Biology 5.3 Hormonal coordination in humans, covering 5.3.1 Human endocrine system, 5.3.2 Control of blood glucose concentration, 5.3.3 Maintaining water and nitrogen balance in the body, 5.3.4 Hormones in human reproduction, 5.3.5 Contraception, 5.3.6 The use of hormones to treat infertility (HT only), and 5.3.7 Negative feedback (HT only). Each one has a worked solution and a mark scheme showing where the marks go.