Cole is making a pedigree chart for the dogs that he breeds. his chart will have shaded shapes to show dogs who carry the dominant trait that he wants to track. which symbol should he use to show a second generation female who expresses that trait?

A shaded circle

Explanation:

In a pedigree, a male is usually represented by a square while females are represented by circles. A marriage between a male and a female is represented by a horizontal line that joins a square to a circle. Affected individuals for a trait within a pedigree are shaded.

Hence, a shaded circle should be used to represent a second generation female who expresses the trait in a pedigree.

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