A) \[\alpha -rays\]
B) \[\beta -rays\]
C) \[\gamma -rays\]
D) UV radiations
Correct Answer: C
Solution :
Besides, naturally occurring spontaneous mutations,- the mutations can be induced artificially in the living organisms by exposing them to abnormal environment such as radiation, physical conditions (i.e., temperature) and chemicals such artificial mutations, inducing substances or agents called mutagens or muta genie agents. \[\beta -rays,\,\gamma -rays\]are the ionizing radiations, cause breaks in poly sugar phosphate backbone of DNA, causing chromosomal mutations such as break, deletion addition, inversion and translocation. Sharbati Sonora was produced from Sonora 64 by mutation breeding using gamma rays. Ultra-violet (UV) light is non-ionizing radiation which may cause mutation at an effective wavelength of \[2,600\,\overset{\text{o}}{\mathop{\text{A}}}\,.\] It causes dimerization of DNA i.e., interference with the proper base pairing of thymine with adenine, resulting in thymines pairing with guanine.
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