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Natural selection acts upon an organism’s A - VCE - SSCE Biology - Question 15 - 2004 - Paper 1
Question 15
Natural selection acts upon an organism’s A. habitat. B. genotype. C. phenotype. D. environment.
Worked Solution & Example Answer:Natural selection acts upon an organism’s A - VCE - SSCE Biology - Question 15 - 2004 - Paper 1
Step 1
C. phenotype.
Answer
Natural selection acts primarily on the phenotype of an organism, which refers to its observable characteristics. These characteristics can be influenced by genetics (genotype) and environmental factors. The phenotype is what the environment 'sees' and thus affects survival and reproduction through natural selection. For example, traits such as coloration, size, and behavior can enhance an organism's fitness in a specific habitat.