Q55 / 180 · NEET 2026 (Cancelled) · Botany
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 :
- Afemales and males, respectively
- Ball males
- Correct answerCmales and females, respectively
- Dall females
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 females, respectively.
Answer: males and females, respectively
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 females, respectively.
Answer: males and females, respectively
Hence, the correct answer is option: 'C'.