68 



CELL HEREDITY 



r- Centromere 



HaploJd 

 nuclei 



FIGURE 3.3. Diagram of some stages during meiosis in the developing ascus sac of 

 Neurospora. To the right is shown the genetic result if the chromosomes carry genes. 

 There are actually seven pairs of homologous chromosomes; because all pairs behave 



