Question
Biology Question on the molecular basis of inheritance
Identify the one, which causes mutation
A
cosmic rays
B
colchicine
C
crossing over
D
X-rays.
Answer
X-rays.
Explanation
Solution
Mutations can be artificially induced with the help of mutagenie agents which can be broadly classified into two groups, physical mutagens and chemical mutagens. Physical mutagens are mainly radiations, although change in pH value (acidity) or temperature shocks may also induce mutations. Among ionizing radiations, more commonly X-rays, gamma rays, beta rays and neutrons are used for inducing mutations. X-rays are produced in a X-ray machine when energy charged particles like cathode rays (electrons) impinge on a suitable target like tungston.