Simplifying things greatly (as this guide aims to do, mostly), quantum dots are incredibly small particles. They range between 2 to 10 nanometers in diameter, which is equivalent to 50 atoms. Yes, atoms. You can't measure these things using your old school shatter proof ruler. It's this small size that gives quantum dots the unique properties to improve our tech.
A zygote is formed when the male gamete (sperm) fuses with the female gamete (ova). Each gamete (regardless of the sex) is marked with an n; indicating it to be a haploid. Therefore; sperm (n) + ova (n) = zygote (2n) [A zygote is a diploid; 2n]. n = 23 chromosomes.
A reproductive cell having the haploid number of chromosomes, especially a mature sperm or egg capable of fusing with a gamete of the opposite sex to produce a zygote. [New Latin gameta, from Greek gametÄ, wife and gametÄs, husband, from gamein, to marry, from gamos, marriage; see gemÉ- in Indo-European roots.]