Question

1. An a  b  Neurospora was crossed with an  + +  form.  Meiosis occurred and 1000 asci were dissected. What is the distance of gene a from the centromere (5 marks)? What is the distance of gene b from the centromere (4 marks)? What is the distance between gene a and gene b (5 marks)? Draw a genetic map for the two genes, indicating the position of the centromere (3 marks).

Answer 1

Distance of a$=\frac{1000}{2}=500asci$

Distance of b$=\frac{1000}{2}=500asci$

Distance between a and b$=1000asci$