NEET Zoology - MCQ Practice Questions

Ex vivo gene therapy involves isolating cells from the patient, modifying them genetically outside the body, and then reintroducing them, reducing immune reactions.

RNAi uses small interfering RNAs (siRNA) or short hairpin RNA (shRNA) to target and degrade specific mRNA molecules, leading to gene silencing.

Chimeric genes combine regulatory sequences from one organism with coding sequences from another, creating novel genetic constructs for transgenic organism development.

CSIR-Institute of Genomics and Integrative Biology (IGIB) has been at the forefront of developing CRISPR-based diagnostic tools for various diseases in India.

Major concerns include the development of resistance in target insects, impacts on non-target beneficial organisms, and long-term ecological effects of Bt crop cultivation.

Base editors (BEs) convert one DNA base to another without creating double-strand breaks, reducing off-target effects and cellular damage compared to standard CRISPR-Cas9.

Xenotransplantation involves genetically modifying animal organs (usually pig organs) to reduce immune rejection, potentially addressing the chronic shortage of human donor organs.

TALENs are proteins from Xanthomonas bacteria that recognize specific DNA sequences with modular repeat domains and direct FokI endonuclease for precise DNA cleavage.