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Force Completion This test can be saved and resumed later. Question Completion Status: --> a) Moving to another question will save this response. Question 4 A sex-influenced characteristic is defined as a trait encoded by A. an X-linked gene. O B. an X-linked gene that can be expressed only in one sex. O C. a Y-linked gene. O D. autosomal genes that are expressed differently in males and females. O E. autosomal genes that are expressed only in one sex. Moving to another question will save this response.

Explanation / Answer

The correct option is

D. autosomal genes that are expressed differently in males and females.

Such traits show higher penetrance in one of the sexes. An example of sex-influenced trait is male pattern baldness. Gene for male pattern baldness has two alleles: B+ (baldness) and B- (full hair). B+ is dominant in males while B- is dominant in female.

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