With reference to the recent developments in science, which one of the following statements is not correct?
A
Functional chromosomes can be created by joining segments of DNA taken from cells of different species.
Correct Answer
B
Pieces of artificial functional DNA can be created in laboratories.
C
A piece of DNA taken out from an animal cell can be made to replicate outside a living cell in a laboratory.
D
Cells taken out from plants and animals can be made to undergo cell division in laboratory petri dishes.
Explanation
Option (a) is the correct answer because it is a scientifically incorrect statement; while recombinant DNA technology allows joining DNA from different species, creating a fully functional, stable chromosome from such diverse segments remains scientifically unachieved. Option (c) is a common point of confusion but is factually correct as Polymerase Chain Reaction (PCR) allows DNA to replicate in a laboratory environment without a living cell. The core concept tested is the practical application and current limitations of biotechnology, specifically genetic engineering and cell culture techniques.
Biotechnology & Genetic EngineeringAdvances in DNA, Chromosome, and Cell manipulationFunctional chromosomesDNA segmentsdifferent speciesartificial functional DNAlaboratoriesanimal cellreplicate outside living cellplant cellsanimal cellscell divisionpetri dishes