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In the Australian sheep blowfly, the length of the wing is a polygenic trait - VCE - SSCE Biology - Question 12 - 2006 - Paper 1
Question 12
In the Australian sheep blowfly, the length of the wing is a polygenic trait. This means that A. there is a small number of clearly defined phenotypes. B. wing lengt... show full transcript
Worked Solution & Example Answer:In the Australian sheep blowfly, the length of the wing is a polygenic trait - VCE - SSCE Biology - Question 12 - 2006 - Paper 1
Step 1
C. the wing length phenotype shows continuous variation.
Answer
In polygenic traits, multiple genes contribute to a single phenotype, resulting in a smooth range of variations, rather than distinct categories. This continuous variation is commonly observed in traits such as height, skin color, and in this case, wing length in the Australian sheep blowfly. Thus, option C accurately describes the characteristic of a polygenic trait.