Question

Find the incorrect statement
(a) Gene therapy is a genetic engineering
technique used to treat diseases at molecular level
by replacing defective genes with normal
genes
(b) Calcitonin is a medically useful recombinant
product in the treatment of infertility
(c) Bt toxin is a biodegradable insecticide
obtained from Bacillus thuringiensis
(d) Trichoderma species is a biocontrol agent
for fungal diseases of plants

Answer 1

The incorrect statement is:

(b) Calcitonin is a medically useful recombinant product in the treatment of infertility

• Calcitonin is a hormone produced by the thyroid glands. It regulates the phosphate and calcium levels in the blood.

• Calcitonin is not used for the treatment of infertility.

• It is used for the treatment of osteomalacia, a disease in which the softnening of bones occurs.

Answer 2

The correct statement is Calcitonin is a medically useful recombinant

product in the treatment of infertility.

Option (B) is correct.

Explanation:

• Calcitonin is a 32-amino acid linear polypeptide hormone.
• It is produced in humans primarily by the parafollicular cells of the thyroid.
• It is also produced in the ultimobranchial body of other animals.
• It acts to reduce blood calcium, opposing the effects of parathyroid hormone.
• Thus Calcitonin is a medically useful recombinant product in the treatment of infertility.

Thus the correct statement is Calcitonin is a medically useful recombinant

product in the treatment of infertility.

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