Tag: transgenic animals

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

Given below are certain features of mice. Read them and select why mice is most preferred animal for studies on gene transfer.


(i) Short estrous cycle and gestation period
(ii) Relatively short generation time
(iii) Convenient in vitro fertilisation
(iv) Production of several offspring per pregnancy 

  1. (i) and (ii) only

  2. (i) only

  3. (i), (ii) and (iv) only

  4. (i), (ii), (iii) and (iv)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mouse is the most preferred animal for studies on gene transfer due to many favourable features like short oestrous cycle and gestation period, relatively short generation time, production of several offspring per pregnancy, convenient in vitro fertilisation, successful culture of embryo in vitro, etc.

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

Read the following statements : 
I) Mule is developed by interspecific hybridisation
II) Groups of bees is called 'swarms'
III) For the herd-improvement cross-breeding is employed
IV) In MOET, fertilised egg at 6-8 celled stage is recovered non - surgically

  1. I, II, III, IV are true

  2. III , IV, V are false

  3. I, II, IV are true

  4. I, II, III and V are true
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • As a mule is produced by crossing a female horse with a male donkey, it can be said to be an interspecific hybrid.
  • Swarming can be defined as the process by which a queen bee forms a new colony. Consequently, the term ‘swarms’ is used to refer to the colonies of honey bees.
  • Cross-breeding enables the production of hybrids that are superior in one respect or the other to their respective parents.
  • In MOET, the female is made to produce more eggs than normal, usually 6-8. After the fertilization of these eggs with sperms, these fertilized eggs are non-surgically removed and transferred to other females.
Hence, the correct answer is 'I, II, III, IV are true'.

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

The injecting of foreign gene in an animal gives rise to 

  1. Transgenic animal

  2. Transgenic organism

  3. Transgenic plant

  4. Transcribed animal
Reveal answer Fill a bubble to check yourself
A 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 micro-injection of DNA into the pronuclei of a fertilized egg which is implanted into the oviduct of a pseudopregnant surrogate mother. This results in the recipient giving birth to genetically modified offspring. 

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

Which of the following is the key principle of bioethics?

  1. Animal rights

  2. Environmental ethics

  3. Autonomy

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

Bioethics encompasses various principles including animal welfare, environmental impact, and individual autonomy in research. All listed options are recognized areas of concern within the broader field of bioethics.

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

The gene transfer in eukaryotic cells is also known as 

  1. Transformation

  2. Transfection

  3. Transduction

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

Transformation is typically used for bacteria, while transfection refers to the introduction of foreign nucleic acids into eukaryotic cells. Transduction specifically refers to virus-mediated gene transfer.

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

Identify the correct application of biotechnology in food processing.

  1. Conversion of perishable raw material into the nonperishable food product

  2. Conversion of nonperishable raw material into food product

  3. Conversion of decayed food into useful food products

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Answer is option A i.e. "Conversion of perishable raw material into the nonperishable food product"
Biotechnology in the food processing sector makes use of micro-organisms for the preservation of food. Food processing is a process by which perishable raw materials are converted to edible and  non-perishable foods and beverages, which have a longer shelf life.

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

Current cloning technology is limited because

  1. It inhibits the growth of native animals.

  2. It spreads the disease to the other animals.

  3. All cloned may suffer from developmental abnormalities.

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

Cloning technology, particularly somatic cell nuclear transfer, often results in high rates of developmental failures, birth defects, and premature aging in clones. These issues remain a significant barrier to widespread application.