Question

shorten prophase I crossing over creates new allele combinations on chromosomes, metaphase I independent assortment shuffles whole chromosomes between daughter cells, and meiosis II separates the (now nonidentical) sister chromatids to produce four genetically distinct haploid gametes. Random fertilization further increases variation by combining different gametes.

Answer 1

Prophase I crossing over creates new allele combinations, metaphase I independent assortment shuffles whole chromosomes, and meiosis II separates nonidentical sister chromatids to produce four distinct haploid gametes; random fertilization then further increases variation by combining different gametes.