Cambridge IGCSE Biology practice

Paper 4 structured question: Concept and uses of classification systems

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Paper

Marks

Topic

Concept and uses of classification systems

Exam-style question

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Paper 4Theory (Extended)4 marks

The classification of organisms based on DNA sequences.

Description

DNA sequences are analyzed to classify organisms into groups based on genetic similarities and differences.

a
Explain how DNA base sequences are used in the classification of organisms.
Your answer
Aim for approximately 4 distinct marking points.
[4]

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Paper 4Theory (Extended)1 marks

Description

DNA analysis helps in understanding the relationships and diversity among species.

a
State one advantage of using DNA sequences for classification.
Your answer
Aim for approximately 1 distinct marking point.
[1]