With reference to the recent developments in science, which one of the following statements is not correct?
Functional chromosomes can be created by joining segments of DNA taken from cells of different species.
Pieces of artificial functional DNA can be created in laboratories.
A piece of DNA taken out from an animal cell can be made to replicate outside a living cell in a laboratory.
Cells taken out from plants and animals can be made to undergo cell division in laboratory petri dishes.
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC IAS – 2019
C) A piece of DNA taken out from an animal cell can be made to replicate outside a living cell in a laboratory: This is correct through techniques like Polymerase Chain Reaction (PCR), which performs in vitro DNA amplification (replication).
D) Cells taken out from plants and animals can be made to undergo cell division in laboratory petri dishes: This is correct and describes standard cell culture and tissue culture techniques.
Therefore, creating a *functional chromosome* by simply joining segments from different species, implying a de novo assembly that functions correctly across generations, is the most biologically complex and least straightforward statement compared to the others, making it the most likely intended incorrect statement in this context.