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MHT CET Medical202624 April 2026Morning ShiftBiologyPrinciples of Inheritance and VariationActual

Hypertrichosis is _____________ character.

Options

  1. AX - linked
  2. BY - linked
  3. Cautosomal dominant
  4. Dautosomal recessive

Correct answer

B. Y - linked

Step-by-step solution

Hypertrichosis pinnae, which refers to the presence of excessive hair on the external ear or pinna, is a classic example of a trait controlled by genes located on the non-homologous segment of the Y chromosome. Traits determined by genes located on the Y chromosome are known as Y-linked or holandric traits. Since females possess two X chromosomes ( XX ) and males possess one X and one Y chromosome ( XY ), Y-linked traits are exclusively transmitted from an affected father to all of his sons. Therefore, hypertrichos

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