Respuesta :
Answer:
Meiosis
Explanation:
Because that's when alleles of different genes cross over, specifically in Prophase I.
Answer: it has physical basis in Meiosis I particularly Anaphase I and meiosis II particularly Anaphase II.
Explanation: Because in Anaphase I spindle get far apart from each other and chromosomes segregation results. In this phase as a result of segregation 2 daughter cells are formed and in Anaphase II, 4 haploid cells are formed.