20. Long answers questions II

Describe mutation breeding with an example.

 

a.  is defined as the sudden heritable change in the nucleotide sequence of DNA in an organism.

 

b. Mutation is a process where genetic variations are produced, resulting in changes in the organism. TrueFalse

 

c. The organism which undergoes mutation is called a .

 

d. The factors which induce mutations are called

 

e.  mutagens are radiations that cause mutations, including X-rays, \(\alpha\), \(\beta\), and \(\gamma\) rays, temperature and UV rays. They induce changes in the DNA as well as chromosomes, which cause mutations.

 

f. Chemical substances which induce mutations are called  mutagens.

 

g. Examples of chemical mutagens include: mustard gasall of the abovenitrous acidethylmethane sulphonate

 

h. The utilization of induced mutation in crop improvement is called .

 

i. Sharbati Sonora wheat was created from Sonora\(-64\) using \(UV\) rays. TrueFalse

 

j. Atomita\(-2\) rice, which is saline tolerant and pest resistant was created by mutation breeding. TrueFalse