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 ________

In many grasshopper species the sex chromosomes are of the XO system. Each female possesses a pair of X chromosomes (XX), while a male has only a single X chromosome (XO). Because the autosome set is the same for both sexes, the total chromosome count differs by one.

Therefore, the individuals that have 23 chromosomes lack one X chromosome and are the males. The individuals that have 24 chromosomes have the full pair of X chromosomes and are the females.

Consequently, the 23‑chromosome‑bearing members are males and the 24‑chromosome‑bearing members are females, respectively.