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Principles of Inheritance and Variation question

2011 · Q66
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Principles of Inheritance and Variation question

2011 · Q66

NEETBiologyPrinciples of Inheritance and VariationMCQ+4 / −1
Which one of the following conditions correctly describes the manner of determining the sex ?
  1. A
    XO condition in humans as found in Turner Syndrome, determines female sex
  2. B
    XO type of sex chromosomes determine male sex in grasshopper
  3. C
    Homozygous sex chromosomes (ZZ) determine female sex in Birds
  4. D
    Homozygous sex chromosomes (XX) produce male in Drosophila
View written solutionFree

Correct answer: B

In grasshopper the males lack a Y-sex chromosome and have only an X-chromosome. They produce sperm cells that contain either an X chromosome or no sex chromosome, which is designated as O.

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