When is new organism produce in sexual reproduction?

Answer 1

Natural selection has favored sexually reproducing organisms because this process provides more genetic variation than asexual reproduction.

Populations that are variable are more likely to have individuals that possess the necessary genes to meet environmental changes.

In sexual reproduction a new Organism results when the recombination of a male haploid/gametic Sperm Cell genetic complement occurs with a female haploid/gametic Ovum genetic complement. A viable, and usually fertile, zygote ensues.

You ask When, I say it is that moment of recombination. [What could be more clear?]