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NEET2026ZoologyPrinciples of Inheritance and VariationActual

In a population of a grasshopper species, the chromosome number of some members is 23 and some other members possess 24 chromosomes. The 23 and 24 chromosome-bearing members in this species are :

Options

  1. Afemales and males, respectively
  2. Ball males
  3. Cmales and females, respectively
  4. Dall females

Correct answer

C. males and females, respectively

Step-by-step solution

Grasshoppers exhibit the XX-XO type of sex determination. In this system, females have a pair of X chromosomes (XX) along with autosomes, while males have only one X chromosome (XO) along with autosomes. Thus, females have one more chromosome than males. Given the chromosome numbers 23 and 24 , the members with 23 chromosomes are males ( 22 autosomes + 1 X chromosome) and the members with 24 chromosomes are females ( 22 autosomes + 2 X chromosomes). Therefore, the 23 and 24 chromosome-bearing members are males and

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