Principles Of Inheritance And Variation Ques 177
177. Minor changes at gene level are described as
(a) Point mutations
(b) Chromosomal mutations
(c) Reverse mutations
(d) Forward mutations
Show Answer
Answer : a
Hints & Solution
(a) Gene mutation or point mutation is the change in expression of a gene caused by change in number, sequence and types of nucleotides. A mutation from a wild gene type to a new type is called forward mutation. Reversal of mutated gene to wild type is reverse mutation. Chromosomal mutations are changes in the morphology of chromosomes.
BETA
