During gamete formation, each allele of a pair for a gene moves to separate gametes. which principle is indicative of this statement? the principle of independent assortment the principle of segregation the principle of unit characters

Think about the actual physical process happening in the cell - the allele (or versions of a gene) are literally physical pieces of DNA strung together into chromosomes. And as the cell divides to form gametes, those chromosomes randomly assort themselves into the two new cells (conditional that each new cell gets one copy of each chromosome, in the case of gametes)...