Question

If genetic recombination results in parental gametes, then how would that affect meiosis and what else would occur?

Answer 1

Genetic recombination leads to exchange of genes between homologous chromosome which will give rise to recombinant gametes because of crossing over between two genes.

Now look in to question;

If genetic recombination leads to parental gamete, then there is not found variation in the gametes due to crossing over in the pachytene stage of prophase 1 of meiosis. But rest of the stages are found in their normal form in the meiosis. There is found independent alignment of the chromosome during the metaphase 1. That's why there is found variation in gametes because of Independent alignment event only. This leads reduce the gamete variation.