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NEETZoologyPrinciples of Inheritance and Variation

In a family, an unaffected male and an unaffected female mate. They have three children in the following birth order (from left to right): an affected son, an unaffected daughter, and an offspring whose sex is unspecified. Which of the following correctly describes the sequence of symbols used to represent the children from left to right in their pedigree diagram?

Options

  1. ASolid circle, hollow square, hollow diamond
  2. BSolid square, solid circle, hollow diamond
  3. CSolid square, hollow circle, hollow diamond
  4. DHollow square, hollow circle, hollow diamond

Correct answer

C. Solid square, hollow circle, hollow diamond

Step-by-step solution

In pedigree analysis, offspring are drawn below the parents and are listed in birth order from left to right. - An affected son is represented by a solid (filled) square. - An unaffected daughter is represented by a hollow circle. - An offspring whose sex is unspecified is represented by a hollow diamond. Therefore, the correct sequence of symbols from left to right is: solid square, hollow circle, hollow diamond. The other options incorrectly assign the shapes for male/female or incorrectly shade the symbols for a

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