A-Level Biology Specification

Edexcel B 9BI0

Section 3.2: Natural selection

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#3.2i

Understand how evolution can come about through natural selection acting on variation bringing about adaptations.

#3.2ii

Understand how organisms occupy niches according to physiological, behavioural and anatomical adaptations.

#3.2iii

Understand how reproductive isolation can lead to allopatric and sympatric speciation.

#3.2iv

Understand that there is an evolutionary race between pathogens and the development of medicines to treat the diseases they cause.