Animal Breeding and Transgenic Animal – Section 1


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6. 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

Correct Answer: D. A variant of human tissue-type plasminogen activator
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7. 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 into a cell
D. The process by which a cell becomes malignant

Correct Answer: C. Introduction of foreign gene into a cell
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8. Chromosomes may be isolated from metaphase cells by

A. hypertonic lysis
B. hypotonic lysis
C. either (a) or (b)
D. isotonic lysis

Correct Answer: B. hypotonic lysis
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9. 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. decreased atresia in small follicles (<1.7 mm)

Correct Answer: A. decreased atresia in medium and large follicles (>1.7 mm)
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10. Genetic change can occur only in

A. one way
B. two ways
C. three ways
D. four ways

Correct Answer: D. four ways
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