Principles Of Inheritance And Variation Ques 136
136. Which one of the following is a wrong statement regarding mutations?
[2012M]
(a) Deletion and insertion of base pairs cause frame-shift mutations.
(b) Cancer cells commonly show chromosomal aberrations.
(c) UV and Gamma rays are mutagens.
(d) Change in a single base pair of DNA does not cause mutation.
Show Answer
Answer : d
Hints & Solution
(d) Change in single base pair of DNA is also a type of mutation called point mutation. It is a type of mutation that causes the replacement of a single nucleotide with another nucleotide of the genetic material, DNA or RNA. For example, a point mutation is the cause of sickle cell disease.
BETA
