Nitrous acid deamintes cytosine to produce :

Select the incorrect state w.r.t. mutagens (a) 5 methyl cytosine and 5 hydroxymethyl cytosine are natural base analogues (b) 5-bromouracil is a structural analogueof thymine © 2-aminopurine is an artificial base analogue of guanine (d) Nitrous acid deaminates adenine to hypoxanthine which is complementary to thymine. (e) Guanine is coverted to xanthine by Nitrous acid which pairs with cytosine

Action of nitrous acid with ethylamine produces

Nitrous acid has no action on:

An organic amino compound reacts with aqueous nitrous acid at low temperature to produce an oily nitrosoamine. The compound is