Outline7 marksChallenge
A photomicrograph shows a cell from a grasshopper testis during meiosis. The original parent cell has a diploid number of 12 (2n = 12). In the photomicrograph, chromosomes are moving towards opposite poles. Each chromosome visible at the equator appears to consist of two chromatids joined at a centromere, and there is no nuclear envelope present.
Outline the key features that distinguish anaphase I from anaphase II in this photomicrograph. Also, outline how the events of meiosis (including crossing over and independent assortment) lead to the production of genetically different gametes.