Variation in some traits is due to the action of many genes - VCE - SSCE Biology - Question 7 - 2002 - Paper 1
Question 7
Variation in some traits is due to the action of many genes.
These traits are said to be
A. polymorphic.
B. polypeptic.
C. polygenic.
D. polyploid.
Worked Solution & Example Answer:Variation in some traits is due to the action of many genes - VCE - SSCE Biology - Question 7 - 2002 - Paper 1
Step 1
A. polymorphic.
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Answer
The term "polymorphic" refers to the occurrence of two or more clearly different forms or morphs, often within the same species. While this term can describe genetic variation, it does not specifically indicate that multiple genes are involved.
Step 2
B. polypeptic.
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The term "polypeptic" does not relate to genetics and is not applicable in the context of variation due to many genes.
Step 3
C. polygenic.
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Correct answer. The term "polygenic" refers to traits that are influenced by multiple genes. This description fits the provided context, as the variation is due to the action of many genes.
Step 4
D. polyploid.
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Answer
The term "polyploid" refers to cells and organisms having more than two paired (homologous) sets of chromosomes. It does not directly relate to the variation of traits due to the action of many genes.
