Practice free Zoology NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
RNAi is a mechanism of to silence genes with the help of?
Double-stranded RNA-mediated interference (RNAi) is a simple and rapid method of silencing gene expression in a range of organisms
What were the earlier sources of Insulin?
The earlier sources of insulin were indeed from cattle (bovine) and pigs (porcine). Insulin was extracted from the pancreas of these animals. The amino acid sequence of bovine insulin differs slightly from human insulin, while porcine insulin is more similar to human insulin, making it a better substitute. This practice was common before the development of recombinant DNA technology that allows for the production of human insulin synthetically.
Modifications bygerm line gene therapy are heritable as -
In germ line gene therapy, the functional gene is incorporated into the genome of germ cells (sperm or eggs). This ensures that the modifications are heritable and will be passed on to future generations. Somatic gene therapy, on the other hand, targets only the somatic (body) cells and does not result in heritable changes.
Earlier which animals were used to test the safety of Polio Vaccine
Transgenic mice were earlier used to test the safety of the Polio Vaccine. These mice were genetically modified to be susceptible to poliovirus, making them suitable for vaccine testing.
Organisms which can be used to gain commercial benefits are called -
Organisms that can be used to gain commercial benefits are called bioresources. Bioresources refer to biological materials, particularly plants, animals, and microorganisms, that are used for economic gain.
Transgenic animals are produced by incorporation of Foreign gene into the -
Transgenic animals are produced by the incorporation of a foreign gene into the nucleus of a fertilized egg. This method ensures that the foreign gene is present in every cell of the developing organism, including germ cells, so the trait can be passed on to future generations.
The bacteria associated with plant genetic engineering are -
The insulin prepared through genetic engineering by an American company named "Eli Lilly" in 1983 is called
In 1983, Eli Lilly an American company prepared two DNA sequences
corresponding to A and B, chains of human insulin and introduced them
in plasmids of E. coli to produce insulin chains. Chains A and B were
produced separately, extracted and combined by creating disulfide bonds
to form human insulin also known as humulin
First transgenic mouse grew twice the normalsize after drinking ---- containing water
The genetically modified crops introduced in India are
In India, genetically modified crops such as Bt cotton and DMH-11 mustard have been introduced. Bt cotton has been widely adopted by farmers, while DMH-11 mustard is still under regulatory review. These crops have been modified for traits like pest resistance and improved yield.
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every Zoology question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.
No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.
The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.