Question

which pedigree symbol is used to represent a female carrier of a recessive x - linked trait? options are represented by symbols: a hollow circle, a circle half - filled (one half purple, one half white), a hollow square, a filled purple square

Explanation:

In pedigree charts, a circle represents a female. A fully white circle is a non - carrier female. A square represents a male, so we can eliminate the square - shaped options. A female carrier of a recessive X - linked trait is represented by a circle that is half - filled (usually with a different color for the filled half). Among the given options, the half - filled circle (the one with a blue half and a white half) is the symbol for a female carrier. The fully white circle is a non - carrier female, the square is for a male, and the fully blue square is for an affected male.

Answer:

The option with the half - filled circle (the one with a blue half and a white half)