Q20 of 43 Page 1

(a) Differentiate between inbreeding and outbreeding.

(b) List any three advantages and one important disadvantage of inbreeding practice in animal husbandry.


a) Inbreeding: It is the practice of breeding closely related individual within the same breed, for four to six generations.


Outbreeding: It is the practice of breeding unrelated animals which may or may not be of the same breed but do not have any common ancestry for four to six generations.


b) Inbreeding:



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According to Darwinian theory of natural selection the rate of appearance of new forms is linked to the life-cycle or the life-span of an organism. Explain with the help of an example.

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(a) Name the causative agents of pneumonia and common cold.

(b) How do these differ in their symptoms?


(c) Mention two symptoms common to both.


OR


(a) Write the scientific names of the causative agent and vector of malaria, and write its symptoms.


(b) Name any two diseases spread by Aedes sp.


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Name the most commonly used bioreactor in biotechnology labs. Mention the most essential components this bioreactor must have so as to provide the optimum conditions to the culture medium, resulting in production of large volume of desired product.

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A child is born with ADA-deficiency.

(a) Suggest and explain a procedure for possible life-long (permanent) cure.


(b) Name any other possible treatment for this disease.