Saved Bookmarks
| 1. |
What are mutagens and there types |
|
Answer» what are MUTAGENS and there types_??MUTATIONS can be artificially produced by certain agents called mutagens or mutagenic agents. Following are TWO major types of mutagens:(1) Physical mutagens:Radiations are the most important physical mutagens. H.J. Muller who used X-rays, for the first time, to increase the rate of mutation in Drosophila, opened an ENTIRELY new field in Inducing mutations. So Muller is considered as father of Actinobiology,(2) Chemical mutagens:Large number of chemical mutagens are now known. These are more injurious than radiations. The first chemical mutagen used was mustard gas by C. Auerbach et. al. during world war 1 Chemical mutagens are placed into two groups:(a) Those which are mutagenic to both replicating and non-replicating DNA such as nitrous acid,(b) Those which are mutagenic only to replicating DNA, such as acridine dyes and base analogues |
|