why does the central part of a red blood cell appear paler than the outer part when viewed under a light microscope

The central pale area of each red blood cell is due to the concavity of the disc.

Explanation:

Ans: The only exception to the six chromosomes per cell rule for mosquitoes would be the gametes, or sex cells. When cells in the ovary or teste undergo meiosis, the result is egg or sperm cells which are haploid, meaning that they have just one copy of each chromosome, for a total of three chromosomes.