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Which of the following is a carrier of heredity?

• A. Gene
• B. DNA
• C. Chromosome
• D. All of the above

Which of the following is a cryoprotectant?

• (A) Mannitol
• (B) DMSO
• (C) Ethylene oxide
• (D) All of the above

Which of the following is a pair of analogous organs?

• A) Wing of the bird and flipper of whale
• B) Fore limbs of horse and man
• C) Wing of bird and forelimb of horse
• D) Wing of insect and wing of bird

Which of the following is an exotic breed of sheep?

• A. Nali
• B. Lohi
• C. Merino
• D. Bakharwal