Q.7 In transgenics, alterations in the sequence of nucleotide in genes are due to P. Substitution Q. Deletion R. Insertion S. Rearrangement (A) P and Q (B) P, Q and R (C) Q and R (D) R and S

Answer: (B) P, Q and R
In transgenic organisms, nucleotide sequence alterations can be due to substitutions (P), deletions (Q), and insertions (R). Rearrangements (S) are also possible but not always considered in basic nucleotide sequence alterations.