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NEETZoologyPrinciples of Inheritance and Variation

Which of the following human chromosomal disorders results in an affected individual possessing a sex chromosome complement that is analogous to that of a normal male grasshopper?

Options

  1. AKlinefelter's syndrome
  2. BDown's syndrome
  3. CTurner's syndrome
  4. DTriple X syndrome

Correct answer

C. Turner's syndrome

Step-by-step solution

A normal male grasshopper exhibits the XX-XO type of sex determination, meaning its sex chromosome complement is XO (it possesses only one X chromosome and lacks a second sex chromosome). Among human chromosomal disorders, Turner's syndrome is caused by the absence of one of the X chromosomes, resulting in a karyotype of 45 with X0. This XO condition is exactly analogous to the sex chromosome complement of a normal male grasshopper. Klinefelter's syndrome results in an XXY complement. Down's syndrome is an autosoma

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