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. polygenic.
C. polypeptic.
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
Polymorphic traits refer to the existence of multiple forms of a trait within a population, but do not specifically imply the involvement of many genes.
Therefore, this option is not the correct choice.
Step 2
B. polygenic.
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Answer
Polygenic traits are those that are influenced by multiple genes. This definition closely aligns with the statement that variation in some traits is due to the action of many genes. Thus, this is the correct answer.
Step 3
C. polypeptic.
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Answer
Polypeptic relates to peptides or chains of amino acids but does not pertain to genetic trait variation influenced by multiple genes. Thus, this option is incorrect.
Step 4
D. polyploid.
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Answer
Polyploid refers to a condition in which an organism has more than two complete sets of chromosomes, generally found in certain species of plants and does not relate to the variation of traits due to multiple genes. Hence, this option is also incorrect.
