Q. Genes A, B and C are linked. Genes A and B are more close than A and C. Find out the correct option for the given statements I. A might be before B and C II. B might be between A and C III. C might be between A and B IV. More crosses has occurred between A and C than A and B
A) I and II
B) II and III
C) III and IV
D) I, II and IV
Explanation
The more cross over between A and C than A and B will be possible only when B is present in between A and C. So by taking this consideration the sequence would be $A \rightarrow B \rightarrow C$. This gene sequence also fulfil the other statements also (I, II, IV)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.