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Free download in PDF Transgenic Animals Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(21)
Transfection refers to which of the following?
[A]
Synthesis of mRNA from DNA template
[B]
Synthesis of protein based on mRNA sequence
[C]
Introduction of foreign gene in to a cell
[D]
The process by which a cell become malignant
Answer: Introduction of foreign gene in to a cell
(22)
Some types of variation are due to changes in the genetic material. What is this type of change called?
[A]
Fertilisation
[B]
Mutation
[C]
Radiation
[D]
Sterilisation
(23)
Which of the following is the process of choosing parent organisms for the characteristics that is wanted in their offspring?
[A]
Active selection
[B]
Reproductive selection
[C]
Selective breeding
[D]
Breeding selection
Answer: Selective breeding
(24)
Animal pharming can be defined as
[A]
growing animals for farming
[B]
programming animals to produce novel products
[C]
generating transgenic animals for farming
[D]
None of these
Answer: programming animals to produce novel products
(25)
Which of these carries the thousands of genes needed to allow animal and plant cells to pass on inherited characteristics?
[A]
Chromosomes
[B]
Chromatogram
[C]
Chromatography
[D]
Chromium
(26)
Transfection refers to which of the following?
[A]
Synthesis of mRNA from DNA template
[B]
Synthesis of protein based on mRNA sequence
[C]
Introduction of foreign gene in to a cell
[D]
The process by which a cell become malignant
Answer: Introduction of foreign gene in to a cell
(27)
Transgenic goats have been used to produce which of the following protein that is used for dissolving blood clots?
[A]
Amyloid precursor protein
[B]
α1-anti trypsin (AAT)
[C]
Casein
[D]
A variant of human tissue-type plasminogen activator
Answer: A variant of human tissue-type plasminogen activator
(28)
Which of the following is the word used to describe what happens when the nucleus of a sperm joins with the nucleus of an egg cell?
[A]
Sex
[B]
Fertilisation
[C]
Intercourse
[D]
Reproduction
(29)
Which of the following is the process of choosing parent organisms for the characteristics that is wanted in their offspring?
[A]
Selective breeding
[B]
Reproductive selection
[C]
Active selection
[D]
Breeding selection
Answer: Selective breeding
(30)
Which protein has been produced generating a transgenic sheep that is used for replacement therapy for individuals at risk from emphysema?
[A]
α-anti trypsin (AAT)
[B]
Plasminogen activator (tPA)
[C]
Casein
[D]
Amyloid precursor proteins
Answer: α-anti trypsin (AAT)
31
Chromosomes may be isolated from metaphase cells by
[A]
hypertonic lysis
[B]
hypotonic lysis
[C]
either (a) or (b)
[D]
isotonic lysis
32
Superovulation is primarily the result of
[A]
decreased atresia in medium and large follicles (>1.7 mm)
[B]
increased atresia in medium and large follicles (>1.7 mm)
[C]
increased atresia in the large follicles (<1.7 mm)
[D]
All the above
Answer: decreased atresia in medium and large follicles (>1.7 mm)
33
When a fertilized egg cell develops into an embryo, the entropy of the living system
[A]
decreases
[B]
increases
[C]
remains constant
[D]
none of these
34
Fusion of karyoplast with the enucleated cell is achieved in presence of
[A]
cytochalasin B
[B]
polyethylene glycol
[C]
both (a) and (b)
[D]
alcohol
Answer: polyethylene glycol
35
Which of the following statements best describes a clone?
[A]
An artificial life form
[B]
An offspring where all of the genetic material in every cell is identical to that of both parents
[C]
An offspring where all of the genetic material in every cell is identical to that of one of its parents
[D]
A type of sheep
Answer: An offspring where all of the genetic material in every cell is identical to that of one of its parents
36
Production of transgenic animals require transfections of
[A]
eggs or embryos
[B]
stem cells
[C]
red blood cells
[D]
all of these
37
Which of the following statement is correct?
[A]
Variation is caused by genes
[B]
Variation is caused by the environment
[C]
Variation can be caused by both genes and the environment
[D]
None of the above
Answer: Variation is caused by genes
38
For the rapid genetic progress, embryo transfer (ET)
[A]
will be as potent a tool as AI (artificial insemination)
[B]
will not be as potent a tool as AI (artificial insemination)
[C]
ET can't be used at all
[D]
will be a superior tool than AI
Answer: will not be as potent a tool as AI (artificial insemination)
39
When the cells are enucleated and centrifuged, nuclei
[A]
detach from cell and settle at the bottom
[B]
detach from cell and remain in the supernatant
[C]
nuclei remain attached to the cell
[D]
none of the above
Answer: detach from cell and settle at the bottom
40
Superovulation is an
[A]
increased ovulatory response by external hormonal therapy
[B]
decreased ovulatory response by external hormonal therapy
[C]
decreased ovulatory response by internal hormonal therapy
[D]
increased ovulatory response by internal hormonal therapy
Answer: increased ovulatory response by external hormonal therapy
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