Learner Resource 1 – Age and fertility
The following table shows how the likelihood of getting pregnant changes as women get older.
These are average figures and can vary widely from individual to individual.
Age
Likelihood of getting pregnant
after two years of unprotected sex
20-24
0.86
25-29
0.78
30-34
0.63
35-39
0.52
40-44
0.36
45-49
0.05
50-54
0.00
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The effects of ageing on the reproductive system
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© OCR 2016
1.
2.
Plot the data on a suitable graph
Use the data in the table to calculate the percentage decrease in the likelihood that a woman
will get pregnant between the age of 20-24 and 35-39.
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The effects of ageing on the reproductive system
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© OCR 2016
3.
Make a list of factors that are required for successful conception.
4.
What causes a decrease in fertility as women age?
5.
Male fertility also decreases with age – list four factors that cause this:-
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The effects of ageing on the reproductive system
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© OCR 2016