Tag: zoology

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Questions Related to zoology

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

The transgenic animals are those which have 

  1. Foreign DNA in some of its cells

  2. Foreign DNA in all its cells

  3. Foreign DNA and RNA in some of its cells

  4. Foreign DNA and RNA in all its cells
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Transgenic animals are animals that have had a foreign gene deliberately inserted into their genome. Such animals are most commonly created by the micro-injection of DNA into the pronuclei of a fertilised egg which is subsequently implanted into the oviduct of a  surrogate mother.
So, the correct answer is 'Foreign DNA in all its cells'
Multiple choice zoology biotechnology and its applications transgenic animals transgenic organisms applications of biotechnology

Mule is a product of

  1. Breeding

  2. Mutation

  3. Hybridisation

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

An interspecific hybrid is the product of mating between parents of two different species. A mule is the offspring of a male donkey and a female horse (mare). Mules are more patient, sure-footed, hardy and long-lived than horses, and they are considered less obstinate, faster, and more intelligent than donkeys.

So, the correct answer is 'Interspecific hybridisation'

Multiple choice zoology biotechnology and its applications transgenic animals transgenic organisms applications of biotechnology
Genetic engineering has been successfully used for producing

  1. transgenic mice for testing safety of polio vaccine before use in humans

  2. transgenic models for studying new treatments for certain cardiac disease

  3. transgenic Cow-Rosie which produces high fat milk for making ghee

  4. Animals like bulls for farm work as they have super power
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In research studies, animals that have been genetically engineered include cattle, pigs, chickens, goats, sheep, dogs, cats, fish, rats and mice. As scientists have sequenced the genomes of domestic animals, more is known about genes and the traits that they control.

So, the correct option is 'Transgenic mice for testing the safety of the polio vaccine before use in humans'.

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

Bioreactors are

  1. Transgenic animals

  2. Fermentation factories

  3. Both (A) and (B)

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A bioreactor may refer to any manufactured or engineered device or system that supports a biologically active environment. In animals, the production of biologically active recombinant proteins use transgenic animals as bioreactor. Bioreactor or fermentation processes are the core manufacturing process in the biotech industry. 

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

Transgenic animal has

  1. Foreign DNA is all its cells

  2. Foreign RNA is all its cells

  3. Foreign DNA is some of the cells

  4. Both B and C
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A transgenic animal is one that carries a foreign gene that has been deliberately inserted into its genome. The foreign gene is constructed using recombinant DNA methodology. A transgenic organism carries in all its cells a foreign gene that was inserted by laboratory techniques. Each transgenic organism is produced by introducing cloned genes, composed of deoxyribonucleic acid (DNA) from microbes, animals or plants, into plant and animal cells. 

Thus, the correct answer is option A.

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

Reporter genes which are used in transformation are of types

  1. Selectable marker gene

  2. Scoreable marker gene

  3. Antibiotic resistant gene

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Reporter genes are classified into selectable markers (which allow survival under selective pressure) and scoreable markers (which allow visual identification of transformed cells).

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

Which of the following is a function of a selectable marker?

  1. Provides resistance against a substrate

  2. Inhibits the growth of normal cell in a culture

  3. Help to create a chromosome map

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Selectable markers provide a survival advantage (like antibiotic resistance) to transformed cells while inhibiting the growth of non-transformed cells in a selective medium.

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

Which of the following ethical issues should be considered for developing transgenic animal?

  1. Yielding capacity

  2. Long term effect on environment

  3. Quality of breed

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

The ethical issues considered for developing transgenic animals are yielding capacity, long term effect on the environment, quality of the breed. They include bioethicists, environmentalists. the results of genetic alteration would be suffered and hence such experimentation should be banned (Eg, a pig with no legs)

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

Ethics are associated with genetic engineering because of ___________.

  1. Human dignity

  2. Commercialization of genetic research

  3. Fair use of genetic information

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

The genetic engineering of animals has increased significantly in recent years, and the use of this technology brings with it ethical issues, some of which relate to animal welfare — defined by the World Organisation for Animal Health as “the state of the animal.

How an animal is coping with the conditions in which it lives”.
These issues need to be considered by all stakeholders, including veterinarians, to ensure that all parties are aware of the ethical issues at stake and can make a valid contribution to the current debate regarding the creation and use of genetically engineered animals.