Tag: transgenic organisms

Questions Related to transgenic organisms

Transgene is a foreign gene artificially transferred into an organism

zoology applications of biotechnology genetically modified organism transgenic organisms genetic modification and biotechnology

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

A transgene is a gene or genetic material that has been transferred naturally, or by any of a number of genetic engineering techniques from one organism to another. The introduction of a transgene (called transgenesis) has the potential to change the phenotype of an organism.

So, the statement is 'True'.

Triticale is produced by the crossing of

zoology applications of biotechnology genetically modified organism transgenic organisms genetic modification and biotechnology

  1. wheat and rye

  2. wheat and maize

  3. wheat and barlye

  4. rye and maize

Show answer
Correct Option: A
Explanation:

Triticale is a crop species (cereal grain) formed as a result of cross between wheat (Triticum) and rye (Secale). It combines the yield potential and grain quality of wheat with the disease and environmental tolerance (including soil conditions) of rye. So, the correct option is 'wheat and rye'.

Flavr Savr is a variety of

zoology applications of biotechnology genetically modified organism transgenic organisms genetic modification and biotechnology

  1. Tomato

  2. Tobacco

  3. Mustard

  4. Cotton

Show answer
Correct Option: A
Explanation:

Flavr Savr (also known as CGN-89564-2), is a genetically modified tomato, that was the first commercially grown genetically engineered food to be granted a license for human consumption. It was produced by the Californian company Calgene.

Genetically Modified Organisms (GMO) are developed by rDNA technology and genetic engineering. They are useful for

zoology applications of biotechnology genetically modified organism transgenic organisms genetic modification and biotechnology

  1. Enhancing food nutritional value

  2. Reduction in the post-harvest losses

  3. Increasing the tolerance power of crops against the abiotic stresses

  4. All of the above

Show answer
Correct Option: D
Explanation:

Genetically modified organisms (GMO) are those organisms whose genetic material has been altered using techniques in genetics generally known as recombinant DNA.
They have many applications like:
Genetically modified organisms can be used to produce genetically modified food which enhances the nutrient value of food. 
GMOs help to increase yields by protecting crops from pests, weeds thereby reducing the post-harvest losses.
Genetically modified crops is emerging as an effective measure to counteract the negative impact of abiotic stress.
Thus, the correct answer is 'All of the above'.

Which of the following risks are associated with genetically modified foods?

zoology applications of biotechnology genetically modified organism transgenic organisms genetic modification and biotechnology

  1. Toxicity in human beings

  2. Allergic reactions in human beings

  3. Antibiotic resistance in microorganisms present in alimentary canal

  4. All of these

Show answer
Correct Option: D
Explanation:

Genetically modified crops are the plants whose DNA has been modified by using genetic engineering methods to introduce a new tait in the plants. But several studies indicate serious health risks associated with GMO's including infertility, immune problems, allergic reactions, changes in the system of GIT. The toxins introduced in plants cause allergic reactions in humans , even they move to the GIT of humans or the foetus in pregnant mothers. GMOs also fails the allergic tests because their proteins have some properties similar to allergens. They also reduces our immunity level. 

So, the correct option is 'Option D' .

Heavy metals like nickel can be removed from water with the help of

zoology applications of biotechnology genetically modified organism transgenic organisms genetic modification and biotechnology

  1. Filtration

  2. Carbomethylchitosan

  3. Biological treatment

  4. Ultrafiltration

Show answer
Correct Option: A
Explanation:

The conventional methods which are commonly used for the removal of nickel from water are physico-chemical methods, such as chemical coagulation, chemical oxidation or reduction, active carbon adsorption, filtration, ion exchange and membrane technologies. Nickel behaves the same as iron, and can be removed by a strong acid cation exchanger. Activated-carbon filtration can be used to reduce the amount of nickel in drinking water, but may not remove it all. Reverse osmosis will remove 97 - 98% of the nickel from drinking water.

So, the correct answer is option A.

The transgenic animals are those which have 

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

  1. Foreign RNA in all its cells

  2. Foreign DNA in some of its cells

  3. Foreign DNA in all its cells

  4. Both A and C

Show answer
Correct Option: C
Explanation:
Transgenic organism is one that has become transformed following the introduction of novel genes into its genome. It is most frequently achieved by integration of doned DNA sequences following their injection into the fertilised egg. This fertilised egg divides mitotically to form the whole organism so that all the cells of the organism will carry the transferred genes. The transferred genes are known as transgenes.
So, the correct answer is 'Foreign DNA in all its cells'.

Given are names of some transgenic animals. Identify the name of transgenic sheep.

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

  1. Rosie

  2. Dogie

  3. Tracy

  4. ANDI

Show answer
Correct Option: C

Which of the following is not used to transfer the recombinant DNA into the host?

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

  1. Micro-injection method

  2. Gene gun method

  3. Bioreactors

  4. Disarmed pathogen vectors

Show answer
Correct Option: C
Explanation:
Bioreactors are considered as vessels in which raw materials are biologically converted into specific products by microbes, plant and animal cells or their enzymes. To produce large quantities of these products, bioreactors are used where large volumes (100-1000 litres) of culture can be processed. Bioreactor provides the optimal conditions for obtaining the desired product by providing optimum growth conditions such as temperature, pH, substrate, vitamins, oxygen and salts.
So, the correct answer is 'Bioreactors'.

Read the following four statements (A-D).

A. The first transgenic buffalo, Rosie produced milk which was human alpha-lactalbumin enriched.
B. Restriction enzymes are used in isolation of DNA from other macromolecules.
C. Downstream processing is one of the steps of rDNA technology.
D. Disarmed pathogen vectors are also used in transfer of rDNA into the host.

Which of the two statements have mistakes?

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

  1. B and C

  2. C and D

  3. A and C

  4. A and B

Show answer
Correct Option: D