What will be the chromosome number in the gamete of fruit fly if its meiocyte has 8 chromosomes?

4

The correct answer is Option (2) → 4

In diploid organisms, specialised cells called meiocytes (gamete mother cell) undergo meiosis. At the end of meiosis, only one set of chromosomes gets incorporated into each gamete.

Fruit flies, or Drosophila melanogaster,  have a diploid chromosome number of 8. So, the chromosome number in the gamete of fruit fly will be 4  if its meiocyte has 8 chromosomes.