CAIE IGCSE Biology 16.2.4 Sexual Reproduction: Advantages & Disadvantages

Practise evaluating sexual reproduction in wild populations and crops through variation, adaptation, disease and reproductive costs.

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

[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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16.2.4—Advantages and disadvantages of sexual question 1