Tag: transgenic animals

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Questions Related to transgenic animals

Multiple choice zoology biotechnology and its applications transgenic animals transgenic organisms applications of biotechnology

Which of the following correctly defines a transgenic animal

  1. An animal which has foreign DNA and RNA in some of its cells because of an injection of DNA and RNA into the nucleus of the zygote from which it is developed

  2. An animal which has foreign DNA in all its cells because of an injection of DNA into the nucleus of the zygote from which it is developed

  3. An animal which has foreign DNA in some of its cells because of an injection of DNA into the nuclei of some of the cells of the blastocyst

  4. An animal which has foreign DNA in.all its cells because of an injection of DNA into the nuclei of some of the cells in adulthood
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A transgenic animal is defined by the stable integration of foreign DNA into its genome, which is typically achieved by injecting the DNA into the zygote, ensuring the gene is present in all cells of the resulting organism.

Multiple choice zoology biotechnology and its applications transgenic animals transgenic organisms applications of biotechnology

Which transgenic animal have been given human genes for organ transplantation into human without risk of rejection

  1. Cow

  2. Sheep

  3. Goat

  4. Pig
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pigs are frequently used in research for xenotransplantation because their organ size and physiology are relatively similar to humans, and they can be genetically modified to reduce immune rejection.

Multiple choice zoology biotechnology and its applications transgenic animals transgenic organisms applications of biotechnology

What is true among the following w.r.t transgenic cows? 

  1. The milk had a protein called human $\alpha - lactalbumin $

  2. The 1st transgenic cow was called Rosie

  3. Both A and B are correct

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The first transgenic cow was Rosie and was produced in 1997. It carried the gene for human alpha-lactalbumin.

So, the correct answer is 'Both A and B are correct'.
Multiple choice zoology biotechnology and its applications transgenic animals transgenic organisms applications of biotechnology

"Ethical Sequence" refers to a philosophy:

  1. Limitation on freedom of speech

  2. Limitation on freedom of action

  3. Limitation on freedom of benefits

  4. Limitation on freedom of interest deduction
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The 'Ethical Sequence' as described by Aldo Leopold refers to the evolution of ethics from individual relations to relations with the community and eventually the land, which implies a limitation on freedom of action in the struggle for existence.

Multiple choice zoology biotechnology and its applications transgenic animals transgenic organisms applications of biotechnology

In which of the following method, foreign DNA is coated on the tungsten particle?

  1. Microprojectile gun method

  2. Microinjection method

  3. Liposome-mediated gene transfer

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Microprojectile gun method is a device for delivering exogenous DNA to cells. Here, the impregnation of the cells with nucleic acid or with other biological molecules is achieved by coating the molecules that are intended to be introduced in to the cells on to micro carriers which generally is high density tungsten micro particles.
Microinjection is a technique of delivering foreign DNA into a living cell through a glass micropipette.
Liposome-mediated gene transfer is cell-type-specific gene transfer vehicles in vitro and in vivo using liposome.
so, the correct answer is option A.
Multiple choice zoology biotechnology and its applications transgenic animals transgenic organisms applications of biotechnology

Which of the following is needed for gene transformation and its screening in animals?

  1. Foreign DNA

  2. Plasmid

  3. Selectable marker

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Successful gene transformation requires the foreign DNA itself, a vector (like a plasmid) to carry it, and a selectable marker to identify which cells have successfully taken up the DNA.