$17$(a) Many patterns of inheritance deviate considerably from the pattern of inheritance as explained by Mendel. List any four such inheritance patterns and explain any three with the help of an example each. 2+3

OR

(b) (i) Construct a transcription unit with a coding strand given below with proper labelling : 2024_CBSE_Biology_Set_Region1_Subset_Set2_Q32__b_p12_11

2024_CBSE_Biology_Set_Region1_Subset_Set2_Q32__b_p12_11

(ii)When does a coding strand become a template strand ?(iii)Why does a double-helix DNA molecule transcribe into a single-stranded RNA molecule ?

Biology · Principles of Inheritance and Variation · Inheritance of Two Genes