Lesson
Lesson-3.2.24- explain Darwin???s theory of evolution by natural selection.
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Lesson-3.2.23- understand that the incidence of mutations can be increased by exposure to ionising radiation (for example, gamma rays, x-rays and ultraviolet rays) and some chemical mutagens (for example, chemicals in tobacco).PreviousLesson-3.2.25- understand how resistance to antibiotics can increase in bacterial populations, and appreciate how such an increase can lead to infections being difficult to control.Next