Explain6 marksChallenge
A diploid plant cell (2n = 4) contains two pairs of homologous chromosomes: one long pair (L1 and L2) and one short pair (S1 and S2). The L chromosomes carry the allele A or a, and the S chromosomes carry the allele B or b. Explain how the behaviour of chromosomes during meiosis, specifically the random orientation of homologous chromosomes at metaphase I, can produce four different types of gametes from this cell. Your answer should include reference to the behaviour of the spindle and the nuclear envelope at the appropriate stages.