CAIE IGCSE Biology 16.2.4 Advantages and Disadvantages of Sexual Questions

Explore the advantages and disadvantages of sexual reproduction for wild populations and crop production.

Exam points

link alleles from two parents to genetic variation among offspring
explain how variation supports adaptation, natural selection and resistance to disease
balance those benefits against the need for gametes, pollination or mates and slower reproduction
Explain how variation helps breed new crop varieties but can also produce unwanted offspring traits.
Link seed dispersal and dormancy to colonising new areas, less competition and survival in harsh conditions.

[Maximum number: 3]

Fig. 5.1 is a photograph of a koala.

Koalas are marsupial mammals that give birth to offspring that are incompletely developed.
The offspring develops further for several months inside the pouch of the mother.

Fig. 5.1

Mammals use sexual reproduction to produce offspring.

Discuss the advantages of sexual reproduction in organisms such as the koala.

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CAIE IGCSE Biology 16.2.4 Advantages and Disadvantages of Sexual Questions question 1