Recent Developments in Genetic Science

Statement (a) is not correct because while DNA segments from different species can be combined in a laboratory setting (recombinant DNA technology), creating functional chromosomes by joining segments from different species faces significant biological compatibility issues. The structural and functional integrity of chromosomes depends on proper centromeric regions, telomeres, and other regulatory sequences that may not function properly when combining segments from different species. Statements (b), (c), and (d) are all correct: (b) Synthetic DNA has been created in laboratories; (c) DNA replication can occur in vitro using PCR and other techniques; (d) Cell culture technology allows plant and animal cells to divide in petri dishes. The question asks which statement is NOT correct. > Hybridization of chromosomal segments across species faces significant functional barriers due to evolutionary divergence. Answer: a.