A donkey and a horse are able to mate and produce an offspring known as a mule. The resultant mule possesses 63 chromosomes in its cells due to the donkey parent having 62 chromosomes and the horse parent having 64. The mule is unable to mate with other mules to produce its own offspring. Which of the following reproductive isolating mechanisms is operating in this situation?

• a. Hybrid Inviability
• b. Hybrid Mortality
• c. Behavioral Isolation
• d. Hybrid Sterility
• e. Temporal Isolation

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

Which of the following is the father of evolutionary concepts?

• A. George cuvier
• B. Buffon
• C. Charles Darwin
• D. Lamarck