Question

Which process helps make meiotic cells genetically different and occurs during prophase I, but not during prophase II?

fertilization
independent assortment
crossing over
chromosome replication

Answer 1

answer is crossing over which creates recombinant gametes and takes place in prophase 1

Hope this helps:)

Answer 2

Crossing over

Step-by-step explanation:

Meiosis cell division consists of two divisions namely meiosis I and Meiosis II. Prophase I of meiosis I is divided into five sub-phases. These are leptotene, zygotene, pachytene, diplotene and diakinesis. During pachytene, crossing over takes place. During crossing over, two non-sister chromatids of a homologous pair exchange a part of their chromosomes. It creates a new combination of genes. Thus, crossing over provides genetic variation in all sexually reproducing organisms