A plasmid used as a vector in recombinant DNA work is

Question

Accepted Answer

C. {'text': 'Autonomously replicating circular extra-chromosomal DNA', 'label': 'C'}

1. Plasmids are small circular DNA molecules found in bacterial cells.
2. They replicate independently of the main bacterial chromosome (autonomously).
3. They carry an origin of replication so inserted DNA can be propagated.
4. Cohen and Boyer used a plasmid vector to deliver antibiotic-resistance genes.
_Source: NCERT Class 12 Biology, Ch 9 "Biotechnology: Principles and Processes", §9.1_

Answer

{'text': 'A viral capsid protein isolated from a bacteriophage', 'label': 'A'}

Answer

{'text': 'A linear stretch of eukaryotic nuclear chromosome', 'label': 'B'}

Answer

{'text': 'A ribosomal RNA molecule floating in cytoplasm', 'label': 'D'}