A) biogenesis
B) abiogenesis
C) gene therapy
D) Both (a) and (b)
Correct Answer: A
Solution :
Swan necked flask experiment was performed by Pasteur to prove theory of biogenesis, ie, origin of life from pre-existing life. This experiment revealed only that the life cannot arise spontaneously under conditions that exist earth today and proved that life did not originate spontaneously but it came from pre- existing life (biogenesis). According to theory of abiogenesis or spontaneous generation, life originated from nonliving substances. This theory was approved by Thales. Anaximander Newton and Descrates. This theory was proposed by Anaximenes. Gene Therapy is the application of genetic engineering technique to alter or replace defective gene. A defective gene may result from an incorrect sequence of basis in the DNA molecule or an inability of the gene to code for the expression of a particular polypeptide.
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