The harlequin ladybird, Harmonia axyridis, is an insect that shows discontinuous variation in colour pattern and continuous variation in body size. The body size of adult $$$H$$$. axyridis varies from 5 mm to 8 mm . Adult ladybirds do not grow or change size. Adults develop from larvae that hatch from eggs. State two environmental factors that may affect adult body size in H. axyridis. ............................................................................................................................................... . .........................................................................................................................................

Biology

IGCSE&ALevel

CAIE

Exam No：9700_s24_qp_41 Year：2024 Question No：9(c)

Answer:

Knowledge points:

17.1.1 explain, with examples, that phenotypic variation is due to genetic factors or environmental factors or a combination of genetic and environmental factors

17.1.2 explain what is meant by discontinuous variation and continuous variation

17.1.3 explain the genetic basis of discontinuous variation and continuous variation

17.1.4 use the t-test to compare the means of two different samples (the formula for the t-test will be provided, as shown in the Mathematical requirements)

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Knowledge points:

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